You are presented with the question "some animals are what for staying warm in the winter?" and the following answer choices: 
- hot headed
 - dormant
 - coiled
 - warm-blooded
 - cold-blooded
 - When it's cold
 - chill minded
 - bullfrogs

Now knowing that some animals' fur grows thicker for staying warm in the winter and mammals are also warm-blooded and are covered with hair or fur, choose the best answer.


 

    warm-blooded     