Behold this little-understood borrowing marsupial of Australia. These blind, earless creatures rarely come to the surface, so we don't know much about them. But when they do rear their endearing heads, we are given a treat. They don't dig permanent burrows, but actually collapse their tunnels behind them as they go. They've got a unique feature to them: their neck vertebrae are fused together to facilitate their burrowing.
I once had a neurosurgeon recommend that I have my c5 & c6 vertebrae fused to treat a ruptured disc. I refused him, and I'm all better. Ah, to think I would have had something in common with this little beast. I can't help but respect any animal that can eat a centipede head first.
Photo source: Ken Tucky