Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
There's a lizard known as the 'Jesus Lizard' that can run across water.
11
Cats sleep for 70% of their lives.
8
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
12