Horse Field Tortoises should be fed grasses, vegetation, and plant life of non-poisonous plants and weeds, and leafy greens. Natural grazing of grasses, weeds, and plant life (Russiantortoise.Org lists edible vegetation) is ideal, but if now not to be had feed plenty of greens (dandelion greens, endive, escarole, mustard greens, kale, romaine lettuce, collards) in addition to hay (timothy or bermuda). Avoid fruits, grains, or animal protein. Supplementation with calcium and vitamin D3 powder is recommended.Housing - Outdoors: Russian tortoise-like burrowing and they will retreat to their burrows within the warmth of the day and at night. This means the fence of their outside puppy must be sunk into the floor