The Common Nightingale is a small songbird found in woodlands, scrublands, and gardens across Europe, western Asia, and parts of North Africa. Although its brown plumage is plain, it is celebrated for its rich, melodious song, often heard during the night and early morning. Common Nightingales feed mainly on insects, spiders, berries, and other small fruits. Their beautiful songs have inspired poets, musicians, and writers for centuries.

The Persian Onager is a rare wild donkey found in the deserts and semi-arid plains of Iran. Recognized by its sandy coat, pale underside, and slender build, it is well adapted to harsh desert environments. Persian Onagers feed on grasses, shrubs, and other vegetation and can travel long distances in search of food and water. Habitat loss, competition with livestock, and hunting have made this species endangered.

The Caspian Red Deer is a large deer found in the forests and mountain foothills of Iran and the Caucasus. It is recognized by its reddish-brown coat and the impressive branching antlers of mature males. Caspian Red Deer feed on grasses, leaves, bark, and shrubs and play an important role in maintaining healthy forest ecosystems. Habitat loss and hunting have caused population declines in parts of their range.

The Asiatic Black Bear is a medium-sized bear found in the forests and mountains of Asia. Recognized by its shaggy black fur and distinctive white or cream-colored chest marking, it feeds on fruits, nuts, insects, honey, and small animals. An excellent climber, it spends much of its time in trees searching for food or resting. Habitat loss and illegal hunting have made the Asiatic Black Bear vulnerable across much of its range.

Latifi's Viper is a rare venomous snake found only in the mountainous regions of Iran. It inhabits rocky slopes and alpine habitats, where its patterned scales provide excellent camouflage. Feeding on small mammals, birds, and lizards, it helps control prey populations within its ecosystem. Because of its limited range and habitat pressures, this little-known species is of conservation concern.

The Mugger Crocodile, also known as the Marsh Crocodile, is a large freshwater reptile found in rivers, lakes, marshes, and reservoirs across the Indian subcontinent and parts of Iran. It feeds on fish, birds, mammals, and other animals, using stealth and powerful jaws to ambush its prey. As a top predator, the Mugger Crocodile plays an important role in maintaining healthy freshwater ecosystems. Conservation efforts have helped stabilize some populations, though habitat loss remains a threat.