Many, many people have mentioned those same words to me - I believed that their dogs really wouldn't bite my dogs - after all they said they would never bite. After the second time in a couple of days of a 'friendly dog' lunging after my little ones I don't trust other dogs anymore (or their owners!!). If the dog is a similar size then I find it's usually okay, but I would never trust a big dog, other then our own. You're not overly protective, just cautious, nothing wrong with that!
