A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
In order to enhance the taste, Japanese macaque wash their food in salt water before they eat. They also make snowballs for fun!
7
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82