A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The station master and operating officer at the Kishi Station, Japan, is a cat!
18
The sloth (a mammal) moves so slowly that green algae can grow undisturbed on its fur!
104
A killer whale's heart beats 30 times a minute under water, 60 times a minute on the surface.
30
Contrary to popular belief, possums, squirrels, chipmunks, and mice do not carry rabies.
28
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
An adult giraffe's tongue is 17 inches long.
28
