Your dog may show his teeth when he smiles at you while letting you know he accepts that you are the leader. It’s a sign of respect, not aggression. You can usually tell the difference by looking at your dog’s posture. If it’s relaxed, you don’t have to worry.
If you think your dog is showing his teeth because he is unwell or in pain, you must see a veterinarian as soon as possible. It’s easy for a dog to fall into the bad habit of baring their teeth to get their way when you’re responding to the situation in the wrong way.
Both dogs may wear their teeth, but unless there’s an aggressive growl, yelp, or whimper, your dogs are likely just displaying playful behavior. If you notice a dog not feeling it and looking like they’d rather be left alone, it may be best to separate them for a while.
It sounds like your dog is showing an appeasement gesture called a submissive grin to show you and others that he is not a threat. Submissive grins are a way for a dog to show deference to another individual.
Dogs smile when they are happy and excited. They’ll also easily wag their tails, perform a happy dance, and have relaxed ears when greeting someone they know and like.
Aggression in dogs typically includes body language or threats such as a hard stare, growl, bark, snarl, tumble, snap and/or bite. Aggression can be a normal form of communication in dogs, however showing aggression towards a person or animal is often considered undesirable or problematic.
Occasionally, a dog bares its teeth with no aggressive tendencies behind them. This is called a submissive grin or smile. It is usually accompanied by non-threatening body language such as lip-licking, an averted gaze, a relaxed posture, and ears flat against the head.
It’s perfectly normal for your new puppy to pounce on you when you greet or feed them, or whine when you leave them alone, but continue to excessively beg, nudge, whine, bark, jump on furniture and you bring toys when they get older can certainly be examples of attention seeking.
Pleasure Growls – Some dogs will growl affectionately when petted or when seeking attention. Some people consider it a threat, but it’s a sign of good luck. Threat Growls – These growls are often seen in dogs that are fearful, territorial, or possessive. This growl tells a perceived threat to go away.