You've loved animals for as long as you can remember
You smell like the zoo even after you've showered twice (but you don't mind)
People mistake you for a veterinarian all the time
You take better care of the animals than you do of yourself -- sweeping the zoo is so much easier than sweeping your house
You're constantly telling people how to properly pronounce "zoology." It's zo-ol-ogy not zoo-ol-ogy.