My shepherd, while not as heavy as I am, is stronger than me. If we go anywhere outside of the house or fenced yard, he has both a slip collar (nylon choker) and a prong collar attached to his leash, which I was taught to basically hold with both hands. He is not dog aggressive, but loves nothing better than chasing cats.
I also noticed in dog school that there were certain breeds that made him very apprehensive. Since I don't know anyone with those breeds, he hasn't been socialized with them. We avoid mass dog gatherings, i.e., vaccine clinics and dog parks.
> It sounds like a combination of too much excitement from too many other dogs and lack of control on the owner’s part (dropping the leash). A good obedience class will probably solve the shepherd’s problems, although not the poor beagle mix’s.
Probably right. Usually dropping the leash is a good way to stop a dog from being aggressive toward another dog: unfortunately that doesn’t work so well unless the dog is already being aggressive. In this case it seems to have granted the GSD permission to be aggressive.
I’d agree with you: obedience class plus I’d suggest a muzzle whilst in public for at least the foreseeable future.