A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
A 42-foot sperm whale has about 7 tons of oil in it.
209
A dairy cow can produce more milk when listening to music.
446
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Squirrels forget where they hide about half of their nuts.
698
Condoms were originally made of animal intestines or linen.
347