But human-canine (and human-feline) aren't the only inter-species friends that fascinate me. For example, there's the lovely friendship between Hippo and Tortoise. And below, Elephant and Dog.
Here is a wonderful slide-show of inter-species friendships, sent to me by my friend Rene Spencer Saller (a gifted music critic as well as connoisseur of cats and other furred types).
These odd-couple friendships happen in the wild, too, but receive strong tribal discouragement. For example, this video from Animal Planet of the lioness who adopted a baby gazelle (eventually it was eaten by another lioness).
It's hard to cross these tribal lines.
