Anas crecca is the smallest dabbling duck in Eurasia, measuring between 33 and 38 cm in length with a wingspan of 53 to 58 cm. The male in breeding plumage is distinguished by a chestnut head with an iridescent green band from the eye to the nape, a white collar, and a body finely vermiculated grey. The female is brown speckled, with a light line at the eye and a light spot on the rump. It frequents shallow wetlands such as marshes, ponds, rice fields, and mudflats, often with dense aquatic vegetation. It primarily feeds on seeds of aquatic plants, algae, small invertebrates, and insect larvae. Reproduction occurs between May and July, with the female building a well-hidden nest in vegetation, where she lays 8 to 11 eggs. Incubation lasts about 21 to 23 days. A migratory species, it winters in Europe, Asia, and North Africa.

The European serin is a small passerine bird found primarily in gardens, orchards, and urban areas across Europe and the Middle East. It is distinguished by its bright yellow plumage, dark wings, and small size. This small bird primarily feeds on seeds, which it finds in trees, bushes, and grasses. It is also known for its high-pitched, melodious song, which it performs during the breeding season.

The Eastern Diamondback Rattlesnake, Crotalus adamanteus, is the largest rattlesnake species in North America, reaching lengths of up to 2.4 meters. It is easily identified by its distinctive diamond-shaped patterns along its back. This venomous snake primarily inhabits pine forests, marshes, and coastal prairies in the southeastern United States. Although feared for its potentially deadly bite, it is generally reclusive and avoids human encounters. Its coloration provides excellent camouflage in its natural habitat. The Eastern Diamondback plays a crucial role in the ecosystem by controlling small mammal populations.

The Coral Snake is a venomous species found primarily in Central and South America, notably in Mexico, Costa Rica, Panama, and Colombia. It typically measures between 50 and 80 cm in length, although some specimens can reach up to 1 meter. It is distinguished by its red, black, and yellow rings, giving it a vibrant and easily recognizable appearance. Although coral snakes are venomous, their bite is rarely fatal due to their small size and the difficulty of delivering the bite, but it can cause severe symptoms due to their neurotoxin. These snakes typically live in tropical forests, where they hide under dead leaves or in shrubs. They primarily feed on small reptiles, amphibians, and young snakes.

The Eurasian nuthatch is a small woodland bird found primarily in mixed and deciduous forests across Europe and Asia. It is easily recognized by its blue-grey and orange plumage, light belly, and distinctive black mask around its eyes. This bird is particularly known for its ability to climb upside down on tree trunks, allowing it to reach areas inaccessible to other birds. It primarily feeds on insects, seeds, and nuts.

The European Stonechat, Saxicola torquata, is a small passerine bird belonging to the Muscicapidae family. It is easily identifiable by its distinctive plumage: the male has a black head, white throat, and orange-brown back, while the female is duller with brownish tones. This bird is often seen perched on bushes or fences, watching for insects to feed on. It inhabits open areas such as meadows, heaths, and agricultural lands. The European Stonechat is a resident bird in temperate regions, but some populations migrate south in winter. It is known for its melodious song and short, sharp calls.

The Eurasian siskin is a small passerine of 11–12 cm with yellow-green plumage streaked with black and dark wings. It inhabits coniferous and mixed woodlands, especially alder and birch stands, feeding mainly on cone seeds and small herbaceous seeds. During breeding, pairs nest in mid-canopy conifers and raise 2–3 broods per year.

The Eurasian Wryneck is a small bird of the woodpecker family, primarily found in open forests and clearings across Europe, especially in France, Spain, Italy, and Russia. It typically measures about 22 cm in length and weighs between 50 and 60 g. Its plumage is mainly brown, with dark spot-like patterns on the back and wings, and a light-colored throat. The Eurasian Wryneck feeds primarily on ants and other insects that it finds on tree trunks or branches. It is often observed pecking at tree bark in search of food. While its population is generally stable, the Eurasian Wryneck is sometimes threatened by habitat loss due to deforestation and changes in agriculture.

The Eastern box turtle is a small terrestrial turtle (10–15 cm shell length) with a high-domed carapace marked by radiating yellow and orange patterns on an olive-brown background. Endemic to eastern North America, it inhabits moist forests, meadows, and wetlands, feeding on invertebrates, berries, and fungi. During the breeding season (April–October), females dig shallow nests to lay 3–8 eggs.

The Emerald Toucanet is a small forest toucan recognizable by its vibrant green plumage, bicolored bill, and compact size. Males and females are very similar, though males may have a slightly longer bill. It inhabits humid mountain forests of Central and South America, from Mexico to northern Bolivia, often seen in small groups in the canopy or foraging for fruit. It is omnivorous, feeding on fruit, insects, small reptiles, and occasionally bird eggs. Though locally threatened by deforestation, it remains widespread overall.

The Turtle Dove is a small, slender dove measuring between 25 and 28 cm in length with a wingspan of 45 to 50 cm. Its plumage is characterized by a rosy chest, a back speckled with black, and a gray-blue head adorned with black and white spots on the neck. It emits a soft, rolling cooing sound, often heard in spring and summer. It frequents clear woods, hedges, and open agricultural areas, where it feeds primarily on seeds fallen to the ground. Breeding occurs from May to July, with one or two clutches of two white eggs. The young leave the nest between 19 and 21 days after hatching. A migratory species, it winters in sub-Saharan Africa. Listed as "Vulnerable" by the IUCN.

The Eurasian Collared Dove is a medium-sized dove, measuring about 32 cm in length with a wingspan of 47 to 55 cm. Its plumage is grayish-beige with pinkish hues on the head and chest. It is characterized by a black half-collar edged with white on the back of its neck. It emits a soft cooing sound, often described as "hoo-hoo-hoo-hoo." Originally from South Asia, it has rapidly expanded into Europe, North Africa, and the Americas. It frequents urban, suburban, and agricultural areas, feeding primarily on seeds, berries, and buds. Breeding can occur year-round, with an average of three to four broods per year. The young leave the nest about 19 days after hatching. The species is listed as Least Concern by the IUCN.

The Notophthalmus viridescens, commonly known as the Eastern newt, is a small amphibian native to North America. It is characterized by its smooth, moist skin, typically green with distinctive red spots along its back. The Eastern newt undergoes several life stages, including an aquatic larval stage, a terrestrial juvenile stage known as the "eft," and an aquatic adult stage. These newts prefer aquatic habitats such as ponds, marshes, and streams but can also be found in moist forests during their terrestrial phase. They primarily feed on aquatic invertebrates and play a crucial role in the ecosystem by controlling insect populations.

The Egyptian Vulture, or Neophron percnopterus, is a small vulture from the Accipitridae family. It is easily recognizable by its white plumage contrasted with black flight feathers and its bare yellow face. This scavenging raptor is often seen soaring in search of carcasses. It sometimes uses tools, like stones, to break ostrich eggs, showcasing its intelligence. It frequents open habitats such as steppes, deserts, and mountains, often nesting on cliffs. Although it is a migratory bird, some populations are sedentary. Unfortunately, this vulture is threatened by habitat loss and accidental poisoning.

The Eurasian greenfinch is a small passerine bird found primarily in gardens, hedgerows, and open woodlands across Europe, Asia, and North Africa. It is distinguished by its bright green and yellow plumage, as well as its distinctive song. This small bird primarily feeds on seeds, which it finds in grasses, bushes, or on the ground. It is also known for its ability to emit powerful and clear sounds, often heard during its breeding season.

The European Mink is a small carnivorous mammal primarily found in wetlands, rivers, and marshes of Eastern Europe, notably in Russia, Ukraine, Poland, and Hungary. It typically measures between 45 and 55 cm in length, with a tail of about 15 to 20 cm, and weighs between 700 g and 1 kg. Its fur is generally dark brown on the back and lighter on the belly, with a distinctive black band running across its face. The European Mink is an excellent swimmer and fisher, primarily feeding on fish, crustaceans, and small mammals. Unfortunately, it is critically endangered due to habitat loss, water pollution, and competition with the American Mink, an invasive species. Its population has significantly declined, and it is now classified as an endangered species.