He's fine with little dogs....it's the big ones that he gets aggressive with. I knew the big lab was on our property so I was leashing Jac up by the van before I took him out to pee. He ran
under the car and they were fighting before I could get to the other side of the van! It happend SO fast! If he wasn't on a leash it could have been much worse. I yanked on the leash to get him away from the lab and he ran and hid under the car. Didn't know he was bleeding until later.
