Over time I've seen: coral snakes, cotton mouths, black widow spiders, deer, skunk, raccoons, coyote, grass snakes, 1 tortoise, armadillos, bugs (I don't know what kind, but lots of them), all types of interesting birds, and rabbits and squirrels galore. Happily I've avoided ticks. I'm not sure which was the most dangerous but the most annoying is the agressive mosquito.