While they don't write love letters, there’s no doubt animals form deep and enduring friendships and use many different ways ...

Jack Russells are the blood-tracking breed preferred by many South African big-game hunters for their grit and skill ...

Blue blood may look alien, but it’s one of evolution’s most elegant solutions to life in extreme environments. Here’s how ...

Red blood is the exception, not the rule. Evolution has painted it green, purple and white in animals that push physiology ...

The Animal Crossing franchise is filled with some of the most adorable creatures in gaming, so here are the cutest villagers.