Tired of it being cold outside? Here’s a quiz on animals who avoid winter’s chill by sleeping through it.

1. There are many levels of hibernation. In animals that are considered “true hibernators,” three things are taking place. Which three of these four are they?
A. Lower body temperature
B. REM dream state
C. Slower breathing
D. Slower heartbeat

2. Which of these is a true hibernator?
A. Chipmunk
B. Fox
C. Groundhog
D. All of the above

3. For some animals, hibernation is more like a winter nap. These animals may occasionally wake up to eat or defecate. What is this type of hibernation called?
A. Chilling out
B. Dormancy
C. Hiveration
D. Wintering

4. Which animals spend the winter in the form of hibernation described in question 3?
A. Chipmunk
B. Opossum
C. Raccoon
D. All of the above

5. The body’s functions are regulated internally during the hibernation of a warm-blooded creature. Because their bodies depend on an outside source to regulate their temperature, some people do not consider cold-blooded animals — amphibians, fish & reptiles — to enter hibernation and instead use this term. What is it?
A. Brumation
B. Dormition
C. Estivation
D. Thermalation

6. What is the term for summer hibernation, which occurs when heat and dry conditions pose a threat to an animal?
A. Brumation
B. Dormition
C. Estivation
D. Thermalation

Match the animal to its hibernation fact:

American Toad
Black Bear
Common Poorwill
Ruby-throated Hummingbird

7. This creature, which is found in the watershed, goes into a state of torpor, similar to hibernation, on cool nights — even in summer — to conserve energy. What bird is it?

8. This the only bird known to hibernate. (It is not found in the watershed.)

9. This creature gives birth during its hibernation.

10. This animal may hibernate in the winter and (answer to question #6) in summer to avoid frost, heat, light, or drought.

11. This animal’s body builds up high concentrations of glucose in its vital organs, which prevents the creature from freezing to death.

12. This animal has been known to hibernate for years at a time.


1. A,C& D
2. C
3. B
4. D
5. A
6. C
7. Ruby-throated hummingbird
8. Common Poorwill
9. Black Bear
10. Earthworm
11. American Toad
12. Snail