The cat brain weighs about 30g.
167
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
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
Elephants are terrified of Bees and actually have a special, distinct vocalization for “Run away the Bees are angry”
49
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
The head of a jellyfish is called the "Bell."
6
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25