What about a turtle?

I have a Red Eared slider.. They're not hard to take care at all. Squirt just needs a little bit of light and food everynight. I take him out and let him walk around outside in the backyard and such. And im pretty sure a 35 gallon tank is enough, I don't really know though.

I believe RES are illegal in some states so you might have to check up on that.