I had similar experiences when we first got Biscuit. The big dogs were just way too rough with him, now he is very weary of big dogs, he doesn't like them one bit. We now live next to a park and there is almost always someone there with a huge dog not on a leash. I always pick Biscuit up because in an instant anything can happen. These people will always say the same things to me too "oh they are just playing". IMO it doesn't matter, accidents happen and dogs can turn in an instant.
Although I too thought I might be being too overprotective in the beginning, now I realize, nothing is worth risking his safety, so.... better safe than sorry when other dogs are being aggressive. I think you're just being a good Mama
