I have a Old School lab Grizz with issues on sniffing other Dogs & cats junk. I know it's natural for them to greet other dogs this way. But with one dog he just won't let go. He will follow this dog from the minute he enters the house till he leaves. I just feel sorry for this dog as he does nothing. So now I put my dog in another room when that dog comes over. Any reason why my dog does this. Is it a sign of dominance? Why doesn't the other dog get snippy back after a bit. Can anyone help me?
Sometimes the other dog will get snippy, it just depends on personalities and tolerance levels. As to why, sometimes an ear infection, anal gland problem or UTI can make a dog very interesting to other dogs. If the other dog's owner is not aware the dog has one of those it might be worthwhile checking it out on the next Vet visit. Your dog might have provided an early alert. Notice all the "might" and "sometimes," not a guarantee one of those is the reason, but could be.
I agree it may be worth a trip to the vet for the other owner's dog. I've known dogs to become unusually obsessed with others when they've had cancer. Not saying it is that, but it's worth a check-up.
I'd say it's probably just bad manners. Perhaps he has been around too many dogs that won't object, or are a bit nervous, or he is particularly thick skinned. Certainly, my boy was awful for this when he was younger, we spent some time at a dog communication class where he got appropriately and firmly told off by some very well socialised adult bitches, and he very much improved but if he has a relapse and forgets himself and the other dog doesn't remind him of his manners then I go get him. I don't think it is anything to do with ear infections or the like - I think my dog is a boy dog that very much likes sniffing other dogs, and that's all there is to it. He is ultra sensitive to other dogs sniffing him for too long (strange that he doesn't connect this with his own behaviour) but will not tell another dog off. He just looks uncomfortable and tries to leave. I always make sure he can leave, and I'd never expose him to a dog that didn't quit for any length of time (as I wouldn't expect any other dog to put up with my dog if he doesn't quit sniffing after a few seconds). It's quite amusing watching him with my young puppy as she grows up. He lives with her all the time but will time to time start sniffing her because she is starting to smell like a girl, probably, and she looks uncomfortable, doesn't tell him off, and I have to tell him to stop. He does, until he forgets himself again. I very much doubt she is going to grow up to be a bitch that tells boys off, because she is getting used to boys being a bit rude!
I just remembered one incident we had. Oban became obsessed with his GSD friend's side, sniffing it, sniffing it. She did tell him off. That night the owner phoned to let me know, there had been a cyst there and that night it had burst. Just a small one but she felt the blood and pus when petting the dog. Owner is a nurse, looked after it herself.
Both my male labs were/are obsessed with sniffing dogs with cancer and impacted anal glands . Happened many times obviously this may not be the case with your dog he just might like It