I didn't even know we had groundhogs around here. I have a ton of things digging holes in my lawn though... squirrels, rabbits, etc.
I had to put chicken wire around my entire back yard to keep the rabbits out of the garden (which takes up almost my whole back yard). The chicken wire is about 4 feet high, and buried a foot underground. Take that, rabbits! Luckily we don't have squirrels in my neighborhood.
I was excited b/c I had never seen one around here, either. Since we'll be moving, we didn't plant an extensive garden this yr, otherwise maybe I'd be pissed too.
Oooh.... make sure that little groundhog doesn't ruin your lawn or anything... Funny little fellas aren't they? Oh dear... at first I thought you said, "the chicken was 4 feet high and buried itself underground." :lol: I misread that one! I was imagining all that in my head, too.