Cats recognise the voice of their owner, but never evolved to care.
22
A scorpion can hold its breath for up to 6 days.
19
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
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
A giraffe's kick is so powerful that it can decapitate a lion.
216