We used to keep turtles as pets. They like a lot of the same things that ducks and chickens like. They really liked meal worms, grapes, melons, kale, mustard greens, water softened cat/dog kibble. Their absolute favorite was strawberries. They need a diet that's 50% protein and 50% veggies/fruit, heavier on the veggies. An unfinished basement is a good place for a turtle and they definitely do prefer to sleep under things. We made them a small wooden 3 sided box that we put upside down. Most turtles hibernate from October until late Spring (early May here). I love turtles.