Tortoises can get fat and it’s a major health hazard if they do. Turtles and tortoises can gain too much weight, adding fat deposits on their limbs and necks, which restricts their ability to tuck into their shells for safety.
Tortoises and turtles absolutely cannot live without their shells. The shell is not something they can simply slip on and off. It is fused to the tortoises’ and turtles’ bones so they cannot live without it.
In the wild, tortoises live relatively solitary lives. They usually come together for breeding purposes but live most of their lives alone. Female tortoises may guard their nests, but they do not protect or raise their babies. That means even very young tortoises naturally live on their own.
A tortoise can turn itself over but it can take a lot of work. The shape, size and health condition of a tortoise affects its ability to turn itself over. The rounder the shell, the easier it is for a tortoise to turn itself over but if a tortoise is large or sick, it will be more difficult.