It'd be interesting to see mine dig burrows, but I hope that never happens. The only digging my big dude does is by the back of the house to cool off(throwing sand on his back) and thats only when I leave him outside the pen and he wants in his dog house. Looks like a happy, healthy sulcata. The only thing is the slight pyramiding, but thats with every captive-raised sulcata. The only way you'd see a perfect sulcata without pyramiding is if you went to South Africa, and see them in the wild.