Classification of animals science quiz for 2nd grade, mammals, reptiles, birds, fish science quiz for kids, amphibians 1st, 2nd & 3rd Grades. In this quiz students will look at pictures of animals and classify them either as mammals, birds, fish or reptiles. Each organism has a specific physical characteristics that differentiate them from the other. E.g. Amphibians (like toads and frogs) live partly in water and on land), reptiles (like lizards) have a smooth leather skin and usually lay eggs for procreation. This quiz will teach kids classification under the categories mentioned. The quiz is interactive and always online.