"Can you keep Eastern Box Turtles outside year-round if you live in Massachusetts? Or should they hibernate indoors in a fridge? I live in southeastern Mass, right on the RI line, and I'm pretty sure eastern box turtles occur naturally in my area. Do they make good pets? Hardy? Good personality?"
I'm sorry for this brief reply...
Yes, especially if they're from the Northeast...it's your preference, there are advantages to both...yes, they occur or occured there...yes, great pets...yes, very hardy as adults but relatively tough as hatchlings...wonderful personality!!
Check your wildlife laws. Mass. is very restrictive with its wildlife. You may need a permit. Also, you may have to purchase the animals from an out-of-state source. Try to contact a wildlife/reptile rescue organization in Mass.. Many times, this is a great way to obtain legal animals in a restrictive state.
I think Rouen lives up near there. He may have some great input for you. I think he keeps three-toes outdoors up there.