A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24
Rattlesnake mating sessions have been known to last more than 22 hours.
232
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
A dairy cow can produce more milk when listening to music.
446
On some poorly researched trivia lists it is stated as a fact that a pregnant goldfish is called a twit. This is not true as goldfish lay eggs.
71