Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Sloths take two weeks to digest their food.
243
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
A giraffe's kick is so powerful that it can decapitate a lion.
216
A puppy is born blind, deaf, and toothless.
16
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10