LAND SNERP

What do you guys think a Land-Snerp is? I've made a few guesses:

A. Post-apocalyptic possum descendent

B. Some sort of mole-musk-rat adjacent creature or offshoot

C. Mutant sub-species of irradiated human toddlers that never actually grow into adults and spend their days wondering the wastelands in search of old LEGOS and cooking pots to wear as hats.

(You're thinking: All that and he didn't even mention the lab mice undergoing rapid intelligence and industrialization? Crazy).