Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Bats sleep 18-20 hours per day.
5
Sharks have been on the planet longer than trees.
14
Two dogs were among the Titanic survivors.
262
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
Dogs sometimes fake being sick to get attention.
26