The cat brain weighs about 30g.
167
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
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
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
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6
Cats sleep for 70% of their lives.
8