We had a giant iguana during huge rain last year. Another former pet I am sure. No pythons yet, but they are spreading farther north. Alligators can be in any water, but so far we have not had one, just lots of wading birds and otters that ate my fish, bobcats, raccoons, posseums, squirrels, rabbits, sometimes coyotes, wild hogs,---- our biggest problem now are armadillos. They have invaded every state; aleins from Mexico and Central America. They dig horrible holes and I am afraid my horses are going to break a leg. I also have big horses. Armadillos are hard to kill, nocturnal--they are busy wile we sleep, and carry disease. watch armadillo hunts on u-tube I will send u a photo of one that won't dig anymore holes at our house after double ought buckshot.