to rest through the cold winter
hibernate
to find a new home
migrate
a place or object that protects an animal
shelter
a change in body form
metamorphosis
characteristics such as hair and eye color
inherited trait
something that you learned to do, such as speaking a language
learned trait
made of a group of cells that are alike
tissue
a group of tissues that work together, such as the stomach
organ
a group of parts that work together
system
a warm-blooded animal with hair or fur
mammal
an animal that spends part of its life in water and the other part on land
amphibian
an animal that lives its whole life in water
fish
an animal that lives on land and has waterproof skin
reptile
an animal that has a beak, feathers, two wings, and two legs, they are the only animals that have feathers
bird
