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Russians cannot be left to forage in a garden as they ae a burrowing species and will disappear. Tunnels can be nine feet long.
None of the brassica family(cabbage, broccoli, sprouts) should be given as they are high in oxalic acid and inhibit the uptake of calcium, even if calcium is scattered on the food. Beans are high in protein and will cause kidney damage and shell deformities. Aslways think of what the anaimal would get in the wild and try to mimic as closely as possible. Russians in particular are at higher risk of dietry problems due to the fact that they eat for such a small time in the wild. Not many captive russians resemble a wild one unfortunately.
Hope this helps
ts can forage in gardens. Green leafy vegetables with high roughage content (dandelions, beans, broccoli, cabbage, etc) *and fruit for last two months before hibernation* provide hay too. leafy greens but not iceburg lettuce have a look on some tort websites as they may have some listed vegs