Cats and dogs can hear ultrasound.
350
The head of a jellyfish is called the "Bell."
6
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Sharks, like other fish, have their reproductive organs in their chests.
248
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5