The Galapagos tortoise is a herbivore, meaning that its diet consists mostly of plants. Some of the plants that the Galapagos tortoise eats include cactus pads, grasses, and foliage. The Galapagos tortoise has very strong jaws and sharp cheek teeth, which allows it to easily chew through tough plant matter. As for predators, the Galapagos tortoise does have some natural predators on the islands where it lives. These include hawks, eagles, and feral dogs. However, humans are now the biggest threat to the Galapagos tortoise population due to habitat destruction and hunting.