I'm wondering about the etiquette here. I take our dog to a designated, fenced part of a local park a couple of times a week to run around off lead and play with other dogs. He loves it. He's a big greyhound and where we live it's illegal to have a greyhound off lead on unsecured land so the fenced area of the park is perfect. Equally perfect, a lot of the dogs who go there are lurchers, labs and retrievers so big and fast enough for my dog to get a good run around and a bit of rough and tumble. Problem is while the labs are big, they are young, mostly under a year so they are still very bouncy and boisterous. It's good natured but I'm getting a bit tired of suddenly having a lab face in mine with paws on my chest. The owners tend to do a token, "oh sorry, down boy, don't jump" and I try to step back and say a sharp "no/down" when they jump up, but it doesn't seem to work. I don't carry treats (praise works with mine and he's got a muzzle on anyway so I can't feed him while out) so they aren't reacting to smells from me. I'm utterly uninterested in other people's dogs and children so I don't encourage them. The owners are nice people, mostly parents after the school run and they know each other so there tends to be distracted chatting. I absolutely won't be making a big fuss about it, the dog park is too valuable to my dog for me to cut my nose off to spite him, but could I give the loony dogs a better indication of my utter lack of interest in them?