Tortoises are not aggressive creatures. They don’t normally show aggression to humans, animals or other tortoises. Like other animals they can be territorial and moody but with the right care, the potential for tortoise aggression can be significantly reduced.
Tortoises dig, bury and burrow instinctively to regulate their temperature, prepare for brumation and to escape predators. The desert tortoise, for example, digs itself into the ground to escape the burning desert sun. Some breeds dig elaborate burrows or dens for communal brumation. Others use it as a strategy for escaping predators.