Another Fun Fact: Cheetahs are incredibly nervous animals. One of the (many) reason's they're going extinct is that cheetahs are so sensitive and nervous, some of them are literally too nervous to breed. Others will breed, but stress themselves out so much, they'll lose their cubs. So zoos with breeding programs had to figure out how to make cheetahs comfortable enough to first of all, get laid and secondly - not spazz themselves into miscarrying. So what'd they do? The dogs make them feel safe, protected and secure!