1. Human (Homo sapiens): We are mammals, characterized by having hair, giving birth to live young, and producing milk for our offspring.
2. Salmon (Salmo salar): A fish, belonging to the class Osteichthyes (bony fish), with a streamlined body and fins for swimming.
3. Eagle (Aquila chrysaetos): A bird, possessing feathers, wings for flight, and laying eggs.
4. Snake (Python reticulatus): A reptile, with scales, laying eggs, and possessing a long, limbless body.
5. Frog (Lithobates catesbeianus): An amphibian, characterized by living both in water and on land, having smooth, moist skin, and undergoing metamorphosis.