which can help warm-blooded animals stay active in cold?
shivering four limbs Animal fur sleep sweating hibernation cold blood fur seals
A B C D E F G H
Most mammals can be active even in cold weather because they are warm-blooded.
warm-blooded animals can stay active in cold by shivering. 
which can help warm-blooded animals stay active in cold? (A) shivering (B) four limbs (C) Animal fur (D) sleep (E) sweating (F) hibernation (G) cold blood (H) fur seals