Animal Groups — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Which animal is a reptile?
A) dog
B) turtle
C) robin
D) goldfish
A chameleon changes color to blend in with leaves or branches so hungry predators cannot see it sitting still on a tree.
2. What do all mammals have?
A) scales
B) feathers
C) fur or hair
D) fins
Ground squirrels dig burrows underground and sleep through the whole winter, which is called hibernating, because there is no food to eat above ground.
3. Which animal is an insect?
A) frog
B) shark
C) eagle
D) ant
Migration is when animals travel a long way to find warmer weather and more food, and geese do this every fall by flying in a V shape to the south.
4. How do fish breathe?
A) with lungs
B) with gills
C) with skin
D) with feathers
An adaptation is a special body part or behavior that helps an animal survive. A rabbit's long ears catch tiny sounds so it can hop away before a fox gets close.
Part B: Fill in the Blank
Write the correct answer on each line.
1. Amphibians can live on land and in water.
Predators are animals that hunt other animals for food, and a walking stick insect's twig-shaped body tricks birds and lizards into passing it by.
2. Birds have feathers to keep them warm.
When a bear hibernates, its heart slows down to save energy because the bear is not eating and only has stored body fat to live on.
3. A cobra is a reptile.
Monarch butterflies migrate all the way from Canada to Mexico each fall to escape the cold and find flowers to drink from.
4. Mammals feed their babies milk.
A hedgehog has sharp spines all over its back, and when it curls into a tight ball the spines stick out like a prickly shield against attackers.
5. A grasshopper is an insect.
The skin stretched between a duck's toes works like a paddle, so each kick pushes a lot of water and helps the duck swim fast.