The seahorse is the only fish to have a neck.
12
The cat brain weighs about 30g.
167
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
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Cats and dogs can hear ultrasound.
350
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6