I recently built my Leopard a new 8x10 outdoor pen for him to go in. He really likes to go under this one bush in the corner of his enclosure. He just likes to chill under there, and occasionally he'll come out of the bush for a bask. Is this normal? He has access to food and water, and sometimes he'll nibble on the weeds close to his bush spot. It's been in the mid 70s this week, so is it too cold for him to be out and that's why he's taking refuge under his shelter?