Zoo Animals

Mammals
There are several characteristics that they all have in common:
• They nurse their young .
• They have hair or fur.

Birds
There are more than 9,000 species of birds alive today, all birds have one unique characteristic: feathers.

Reptiles
Reptiles are the only animals with the following combination of traits:
• Skin covered with a sheet of scales.
• They control body temperature through external means.
• They have young that look like miniature adults (most hatched from eggs, but some born live)

Amphibians
Almost all amphibians have thin, moist skin that helps them breathe. Most amphibians undergo a unique change from larvae to adults, called metamorphosis.

Fish
There are some things that all fish have in common:
• They breathe with gills.
• All fish also have fins.
• Most fish also have scales and most hatch from eggs.