The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
Squirrels forget where they hide about half of their nuts.
698
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
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12