I just got a tortoise from craigslist with a large aquarium, 2 bowls, and 3 lights. My tortoise keeps moving his bowls around and digging in his bedding. I wonder if he's bored I should put more stuff in his cage. His former owner warned me about falling on his back, is that a real concern or can i get him a cave or something. What do tortoises play with? BTW he is a 4 year old Hermanns.