Palioboros - The Burrow Advantage?

Palioboros: One of the big remaining questions is, why did they burrow in the ground? He says martin points out that even ancient armadillos would still have to avoid things like sabre toothed cats and short faced bears. But when we look at the great ground sloths here, digging tunnels so big wouldn't have been able to keep these preditors out,. palioboros writes. "They're not as threatened by these predators, and they also are not creating spaces"