Prairie Dog

Cynomys ludovicianus - Prairie Dogs are highly social, living together in large underground colonies called "towns." Found throughout the grasslands of North America, their underground burrows made them very unpopular with ranchers who were afraid their cattle might trip due to the holes in the ground. Kissing, nuzzling, grooming, playing, and vocal communication reinforce family bonds among the prairie dogs.
Interesting fact: These social rodents are not actually dogs, but shorthaired and short-tailed squirrels.