The animals are free to roam the savannah all day or night if they wish. There is an enclosure that they can go into if they want. Some do, some don't. The animals are more active in the early mornings and late afternoon. When the sun is out and it's hot, they (like everyone else) look for shaded areas. Sometimes they're napping. Try to get up early and sit on the balcony and watch them--fascinating.