The Cavia aperea, commonly known as the Brazilian Guinea Pig, is a small rodent native to South America. Often mistaken for the domestic guinea pig, it is a distinct species. This modest-sized rodent has a stocky body, short ears, and a brownish coat that helps it blend into its natural surroundings. It primarily inhabits grasslands, savannas, and open forests, where it feeds on a variety of vegetation. The Brazilian Guinea Pig is a social animal that lives in groups and communicates through a series of vocalizations. Although mainly diurnal, it can also be active at dusk. Its ability to adapt to various habitats makes it a resilient species.

The waterbuck, or Kobus ellipsiprymnus, is a large African herbivore known for its grayish-brown coat and distinctive white ring on its rump. It primarily inhabits wet savannas and grasslands near water bodies, as it relies on water for survival. Males have long, curved horns, while females lack them. This gregarious mammal forms mixed herds, although adult males are often solitary or in small groups. The waterbuck is an excellent swimmer, allowing it to escape predators. Its diet mainly consists of grasses and aquatic plants.

The kob, or Kobus kob, is a graceful and elegant antelope primarily found in West and Central Africa. Recognizable by its tawny coat, it has a lighter belly and white markings around the eyes and muzzle. Males boast magnificent lyre-shaped horns, while females lack them. These animals live in herds, often near water sources, and primarily graze on grasses. Their social behavior is complex, with males establishing territories during the breeding season. The kob is a keystone species in its ecosystem, playing a vital role in the food chain.

The Guereza Colobus is a large primate belonging to the family Cercopithecidae, easily recognized by its distinctive black and white fur. It has a white mane around its face, white limbs, and a long, bushy tail that helps it stabilize in the trees. Its black body is contrasted by tufts of white fur along the sides and back, making it one of the most elegant primates of the forest. It primarily lives in the tropical and subtropical forests of East Africa, spending most of its time in the trees. The Guereza Colobus is primarily herbivorous, feeding on leaves, fruits, seeds, and flowers. With its specialized stomach, it can digest tough, fibrous leaves that other animals cannot consume. It lives in social groups led by a dominant male and is generally very calm, moving gracefully and agilely through the forest canopy. Although its population remains stable in some protected areas, it faces threats due to deforestation and hunting, causing some populations to be classified as vulnerable.

The Colugo, also known as the flying lemur, is a small tree-dwelling mammal native to Southeast Asia. While not a true lemur, it is often called so due to its gliding abilities, which it performs using a thin membrane of skin that connects its limbs to its body. This gliding allows it to move efficiently from tree to tree in search of food, primarily consisting of leaves, fruits, and flowers. The Colugo is a nocturnal and rather discreet animal, using its dense fur and camouflage to blend into the forest environment.

The Coyote is a medium-sized canine, very similar to the wolf but smaller and more agile. Its fur varies from gray to light brown, with a face often marked by black traits, a white chest and belly, and dark legs. The Coyote is easily recognizable by its pointed muzzle, relatively large ears, and bushy tail. It typically stands between 60 and 80 cm at the shoulder, with a total length of 75 to 90 cm for the body, excluding the tail. This canine is an opportunistic feeder, primarily hunting small mammals such as rodents, rabbits, and sometimes birds, but it can also eat fruits and carrion. Highly adaptable, the Coyote inhabits a wide variety of environments, ranging from prairies and deserts to urban areas, and it is particularly active at dusk and during the night. Unlike other predators, the Coyote often hunts alone or in small groups. Although its population is stable across much of its range, it is sometimes seen as a nuisance in certain areas and faces threats from hunting and habitat loss.

The Fallow Deer, also known by the scientific name Dama dama, is a medium-sized cervid native to Europe and Asia Minor. It stands between 90 and 120 cm tall at the withers and can weigh between 30 and 100 kg, depending on sex and environment. Its coat, usually brown or gray, is spotted with white during the summer season, helping it blend into its forest habitat. The Fallow Deer primarily inhabits forests and woodlands, where it feeds on a variety of vegetation, including grasses, leaves, fruits, and bark. It is also known for its habit of moving in herds, often forming separate groups of males or females. The Fallow Deer is a ruminant herbivore that is primarily active at dawn and dusk. Although it is mostly sedentary, it can travel long distances in search of food or new habitats. During the breeding season, males fight for females, producing characteristic sounds such as roars. This species is listed as of least concern, but it can be threatened by habitat loss and excessive hunting.

The White-fronted Damalisque is a medium-sized antelope, recognizable by its reddish-brown coat and the distinctive white band that crosses its forehead, which gives it its name. It stands between 1.30 and 1.50 meters tall at the withers and weighs between 50 and 70 kg. This mammal primarily inhabits open savannas, grasslands, and semi-desert areas, preferring open terrain where it can graze on grasses, leaves, and stems. It is well adapted to heat and drought, thanks to its short coat and behavior of seeking shade during the hottest parts of the day. The White-fronted Damalisque lives in small groups, often consisting of females and young, while adult males usually live alone or in small groups. It is mainly active in the morning and late afternoon, when it is easier to feed while avoiding the heat of the day. While the species is currently in good health, it faces threats such as illegal hunting, habitat loss due to human expansion, and competition with livestock for food resources.

The Common Damalisque is a medium-sized antelope, recognizable by its reddish-brown or gray-brown coat, with distinctive white markings on the legs and belly. It stands about 1.10 to 1.30 meters tall at the withers and weighs between 45 and 70 kg. This mammal primarily inhabits the savannas and open grasslands of East Africa, notably in Kenya, Tanzania, and Uganda. It mainly feeds on grasses and herbaceous plants but can also consume leaves and fruits when grass resources are limited. The Common Damalisque is known for its social behaviors, typically living in groups of females and young, while adult males are often solitary or form small groups. During the breeding season, males fight to defend their territory and access females. While it is currently listed as of least concern, the Common Damalisque faces threats such as habitat loss due to agriculture and urban expansion, as well as hunting for its meat and skin.

The White-beaked Dolphin is a small cetacean from the Delphinidae family, easily recognizable by its white beak and distinctive markings on its body. It typically measures between 1.5 and 2.5 meters in length and weighs between 70 and 150 kg. This dolphin primarily inhabits the cold and temperate waters of the North Atlantic, particularly around Iceland, Greenland, and the North American coasts. It primarily feeds on fish and cephalopods, using group hunting techniques to capture its prey. The White-beaked Dolphin is often seen in small groups or families, and it is known for its complex social behaviors, including group play and acrobatic leaps. This dolphin has a lifespan of about 20 to 30 years in the wild. Although the species is not currently endangered, it faces threats from pollution, underwater noise, and ship collisions. Managing its marine habitats is crucial for the preservation of this species.

The Common Dolphin is a medium-sized cetacean, easily recognizable by its streamlined body and distinctive beak. It typically measures between 2 and 2.5 meters in length and weighs between 100 and 150 kg. This dolphin is widely distributed in temperate and tropical waters, particularly in the Mediterranean, the Atlantic, and the seas around Asia. The Common Dolphin primarily feeds on fish, cephalopods, and sometimes small crustaceans, hunting in highly coordinated groups. Its social structure is complex, with groups ranging from a few individuals to several hundred, depending on environmental conditions and the availability of food resources. It is also known for its acrobatic behaviors, such as jumping and group play, and is often seen following boats. While this species is not currently endangered, it faces threats from pollution, disturbances caused by human activities at sea, and bycatch in fishing nets.

Hector's dolphin is one of the smallest dolphin species in the world, with an average size of 1.2 to 1.5 meters. It primarily inhabits shallow coastal waters of New Zealand, where it feeds on fish and squid. This dolphin is recognizable by its small, compact body, rounded fins, and distinctive face. Threatened by pollution, bycatch, and habitat loss, it is classified as endangered.

The Indo-Pacific bottlenose dolphin measures 2–3 m and weighs 150–230 kg, with a light grey streamlined body and a short beak. It forms small coastal groups in shallow tropical and subtropical waters, feeding on fish, cephalopods and crustaceans. Highly social and playful, it often interacts with boats, performing spectacular leaps and bow-riding.

The South Asian river dolphin is a small freshwater cetacean in the family Platanistidae, measuring 2–2.5 m in length, with a pale grey streamlined body and a long narrow beak. It inhabits shallow rivers, oxbow lakes, and canals of the South Asian subcontinent, feeding mainly on freshwater fish and crustaceans. Blind, it uses echolocation to navigate and hunt in turbid waters.

The Irrawaddy dolphin, Orcaella brevirostris, is a freshwater and coastal cetacean known for its rounded forehead and lack of a distinct beak. It typically measures between 2 and 2.7 meters and weighs up to 150 kg. Its skin is light gray with a paler belly. This dolphin is often seen in small groups and is noted for its social and curious behavior. It can swim in both freshwater and saltwater, frequenting estuaries, rivers, and coasts. Unfortunately, it is threatened by habitat degradation, accidental capture in fishing nets, and pollution. Its conservation is crucial to maintaining the balance of the aquatic ecosystems it inhabits.

The Russian Desman, or Desmana moschata, is a small semi-aquatic mammal belonging to the Talpidae family. It is primarily found in the wet regions of Russia and Ukraine. This peculiar animal has a long, flexible snout and a flattened tail, which allow it to move easily in water. Its dense, waterproof fur protects it from the cold, while its webbed feet facilitate swimming. The Russian Desman is a nocturnal animal, feeding mainly on aquatic insects, small fish, and crustaceans. Unfortunately, it is threatened by habitat destruction and water pollution, leading to a significant decline in its population.

The Tasmanian Devil is a medium-sized carnivorous marsupial, easily recognized by its black fur and white patches on its chest and hips. It measures about 50 cm in length, with a tail of 25 cm, and weighs between 5 and 10 kg. This nocturnal predator is found exclusively on the island of Tasmania, where it primarily feeds on small mammals, birds, insects, and carcasses of dead animals. The Tasmanian Devil is known for its aggressive feeding behavior, often making growling and screaming noises. It is also a solitary animal, only coming together during breeding or when it finds a large carcass. While this species plays an important scavenging role in its ecosystem, it is now threatened by a devastating infectious disease, Devil Facial Tumour Disease (DFTD), which has significantly reduced its population. Habitat loss and vehicle collisions also pose threats to its survival.

The Cephalophus monticola, commonly known as the blue duiker, is a small mammal from the Bovidae family. It is one of the smallest antelopes, standing about 30 to 40 cm tall at the shoulder and weighing between 3 and 6 kg. Its coat is typically reddish-brown with shades of gray, allowing it to blend effectively into its natural habitat. It is primarily nocturnal and crepuscular, feeding on leaves, fruits, and flowers. The blue duiker is solitary or lives in small family groups. It is very shy and uses its agility to escape predators. It is mainly found in dense forests and wooded areas of Central and East Africa.

The Kirk's Dik-dik is a small antelope, recognizable by its modest size and distinctive features, including its elongated snout and large, expressive eyes. Standing about 40 cm tall at the withers and weighing between 3 and 6 kg, it is one of the smallest members of the antelope family. Its coat is usually light brown or gray, with a paler belly and distinct facial markings. The Kirk's Dik-dik primarily inhabits savannas and wooded areas in East Africa, notably in Somalia, Kenya, Tanzania, and Ethiopia. It feeds mainly on leaves, fruits, and herbaceous plants. This small herbivore is mostly active at dusk and during the night, using its well-developed sense of smell to detect predators, emitting a characteristic call to alert other members of its group. The Kirk's Dik-dik is typically solitary or lives in small family groups. Although it is not currently threatened, it faces dangers such as habitat loss due to agricultural expansion and hunting.

The dromedary, Camelus dromedarius, is a large mammal with a single hump, well adapted to arid and desert environments. Originally from the Arabian Peninsula, it is now widely domesticated and used as a pack and transport animal in many regions of the Middle East and North Africa. Its hump, made of fat, allows it to survive long periods without water. The dromedary has a distinctive gait, moving at a steady pace over long distances. Its thick skin and closable nostrils protect it from sandstorms. Dromedaries are herbivores that primarily feed on dry and thorny vegetation.

The common duiker, or Sylvicapra grimmia, is a small African antelope found in various regions across the continent. It is characterized by its modest size, reaching about 50 cm at the shoulder, and its grayish-brown coat that allows it to blend into its surroundings. Males have small, straight horns, while females are hornless. This animal is primarily solitary, although it can sometimes be seen in small family groups. It is highly adaptable, living in diverse habitats ranging from savannas to sparse forests. The duiker is an opportunistic herbivore, feeding on leaves, fruits, and sometimes bark. Its ability to survive in varied environments makes it a resilient species.

The Cephalophus natalensis, or Natal Red Duiker, is a small African antelope that primarily inhabits dense forests and wooded areas in eastern South Africa. It is distinguished by its reddish coat, slender legs, and short, straight horns. This discreet mammal stands about 40 to 50 cm at the shoulder and weighs between 12 and 14 kg. It is mainly active at dawn and dusk, feeding on leaves, fruits, and flowers. The Natal Red Duiker is known for its shy nature and ability to blend into its environment to escape predators. Its population is stable, although deforestation poses a potential threat.

The Dugong is a marine mammal and herbivore primarily found in warm, shallow coastal waters of the Indian Ocean and Pacific. Closely related to manatees, it is more agile, with a streamlined body designed for swimming. The Dugong feeds on seagrasses, primarily seagrass species, which it pulls from the ocean floor. Although a protected species, the Dugong is threatened by habitat loss, pollution, accidental fishing, and climate change.

The short-beaked echidna is a small monotreme mammal, 30–45 cm long, covered in spines with an elongated head bearing a long tubular snout. Endemic to Australia and New Guinea, it inhabits forests, scrublands and open areas, feeding mainly on ants and termites with its fast, sticky tongue. Solitary, it alternates nocturnal and crepuscular activity phases to avoid heat.

The Red Squirrel is a small tree-dwelling mammal, well-known for its reddish-brown fur and long ears, often tipped with tufts of hair. It typically measures between 20 and 25 cm in length, with a bushy tail that can reach up to 25 cm in length. This rodent is mainly found in deciduous and mixed forests across Europe and Asia, but it is also present in urban parks and gardens. The Red Squirrel is omnivorous, feeding mainly on nuts, seeds, mushrooms, and occasionally insects or bird eggs. Highly agile, it moves with ease between trees, using its tail as a stabilizer. It is a territorial animal that builds ball-shaped nests made of twigs, moss, and leaves, often placed in tree trunks or branches. While the species is still fairly widespread, it faces threats such as habitat loss, competition with the introduced Grey Squirrel, and collisions with vehicles.

The Moose is a large herbivorous mammal, the largest member of the deer family, easily recognizable by its imposing silhouette and large ears. It can stand up to 2 meters tall at the withers, with a weight ranging from 300 to 700 kg, with males typically being larger than females. Its fur is thick, usually dark brown or black, and it has long legs that allow it to move easily through forested or marshy areas. The Moose is primarily found in the boreal forests of Europe, Asia, and North America, where it mainly feeds on leaves, bark, branches, and aquatic plants. It is a solitary animal, preferring quiet areas and is mainly active at dusk and night. During the breeding season, males emit powerful calls to attract females and mark their territory. While the species is not currently endangered, it faces threats such as habitat loss, vehicle collisions, and hunting.

The Common Eland is a large herbivorous ungulate, belonging to the bovidae family, and one of the largest species of antelope. It can stand up to 1.5 meters tall at the withers and weigh between 400 and 900 kg, with males generally being larger than females. Its coat is usually light brown or gray, with lighter vertical stripes on the flanks. The Common Eland has large, spiral horns that can reach up to 80 cm in males. It primarily inhabits savannas and grasslands in sub-Saharan Africa, where it feeds mainly on grasses, leaves, and bushes. It is a social animal, living in large groups, especially during the breeding season. While the Common Eland is currently listed as of least concern, it faces threats such as habitat loss, hunting, and competition with livestock for food resources.

The Giant Eland, or Tragelaphus derbianus, is a large, robust, and majestic antelope, easily recognizable by its spiral-shaped horns, present only in males. It measures between 1.4 and 1.7 meters at the shoulder and can reach a length of 2.5 to 3 meters, including its tail. Its weight ranges between 600 and 1,000 kg, making it one of the largest antelopes. Its coat is generally light brown to gray, with white markings on the belly and throat. The Giant Eland primarily inhabits open savannas, light forests, and mountainous regions in Central and West Africa, mainly in the Democratic Republic of Congo, Cameroon, Gabon, and Angola. Herbivorous, the Giant Eland primarily feeds on grasses, leaves, and fruits, and it is capable of consuming a wide variety of vegetation, allowing it to adapt to different environments. It is a social animal that lives in family groups or small herds. While the species is classified as of least concern, it is threatened by habitat loss and hunting.

The Asian Elephant is a large land mammal, known for its imposing size and large rounded ears. It typically stands between 2 and 3.5 meters at the withers and weighs between 2,000 and 5,000 kg. Its coat is generally grayish, although some individuals may have a more brownish tint. The Asian Elephant differs from the African Elephant in its smaller size, narrower ears, and its trunk, which has a single "finger" at the tip. This elephant primarily inhabits tropical forests, savannas, and wetland areas in South and Southeast Asia, including India, Thailand, Sri Lanka, and Cambodia. It is herbivorous, feeding on leaves, bark, fruits, and grasses. The Asian Elephant has often been associated with human communities due to its historical role in labor, transport, and religious ceremonies. However, the species is threatened by habitat loss due to agriculture, poaching for its valuable tusks, and conflicts with human populations. It is listed as endangered by the International Union for Conservation of Nature (IUCN).

The Forest Elephant is a large land mammal, characterized by its smaller size compared to the Asian Elephant and the African Savannah Elephant, standing around 2 to 3 meters at the withers and weighing between 2,000 and 5,000 kg. Its coat is gray, but its skin is often rougher than other elephants, and its ears are smaller, adapted to its forest habitat. The Forest Elephant primarily inhabits the dense forests of Central and West Africa, where it feeds on a wide variety of vegetation, including leaves, bark, fruits, and roots. Unlike the Savannah Elephant, it is more discreet and less social, though it may form small family groups. This elephant plays a key role in its ecosystem, contributing to seed dispersal and forest regeneration. However, the species is threatened by deforestation, poaching for its valuable tusks, and conflicts with human communities. It is currently listed as vulnerable by the International Union for Conservation of Nature (IUCN).