Have you ever seen a dog at the zoo? True, some zoos offer dog-friendly days when your pup can tag along with you, but it seems unheard of for dogs to live in the zoo alongside tigers and monkeys.

The Cincinnati Zoo has announced that it will be retiring three of its cheetah companion dogs.Moose, Remus and Daisy had worked for several years in the past to serve as what the zoo calls "surrogate ...