Cows can sleep standing up, but they can only dream lying down.
745
The octopus does not have a blind spot.
273
Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
11
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
Whales and dolphins can't taste anything other than salt.
11
A scorpion can hold its breath for up to 6 days.
19
Dogs sometimes fake being sick to get attention.
26