Hi all – Thanks for the comments. I’ve heard and seen this kind of fight between groundhogs before, though never at such close quarters, and I’m not sure exactly what it’s about. It’s my understanding that these are unusually solitary marmots, and some individuals can be quite hostile. But there are also reports of groundhogs – entirely unrelated ones – sharing burrow systems sometimes. So perhaps one of the groundhogs here wants to move in under the house, and the other is saying “No way!”

I’ve now tagged a bunch of my groundhog posts; the oldest in the bunch is probably the most informative.

MB – That fly really makes the picture, doesn’t it? Good luck on my part, since of course I didn’t see it when I took the picture.

Shai – Thanks, but I’d prefer to be Secretary of Agriculture – many more subsidies to axe there, and the U.S. Forest Service controls way more public land than NPS and F&WS.

rr – You need to get a marmot terrier for that.

By the way, I’m temporarily locked out of the back-end of my blog, so don’t know if I’ll get a post up today.