Bats sleep 18-20 hours per day.
5
Dolphins have names for one another.
18
When cats are happy, they may squeeze their eyes shut.
10
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
Nicole Kidman is scared of butterflies.
65
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6