Like territorial behavior, protective aggression usually appears as puppies mature into an adolescence or adulthood, at one to three years of age. Many dogs show the tendency to guard their possessions from others, whether they need to or not.
It isn't normal brain development for a puppy to do that to people or other dogs. The younger a dog is when it shows serious aggressive behaviors, such as growling or snapping when handled, the more likely it will bite and injure humans in the future.
Most often a dog's aggression is motivated by fear, anxiety, conflict about what to expect and what to do and the anticipation of possible punishment (see Aggression – Diagnosis and Overview, (Dominance, Alpha, and Pack Leadership – What Does It Really Mean?, and Canine Communication – Interpreting Dog Language).
Often puppy fear can become aggression. Positive reinforcement, punishment-free obedience training is one way to create a well-behaved, well-mannered dog and prevent fear aggression in puppies. Puppy aggression is not breed-specific. As sweet, loving, friendly dogs exist in every breed, so do aggressive dogs.
They let you know if they're uncomfortable, afraid, or upset about a certain situation. Growling is also a warning. It is your puppy's way of saying that they might bite. If your puppy is growling, they are telling you that they don't want to be in a given situation and need your help.
It is normal for puppies to behave this way; your very young girl is just trying to get you to play. She's obnoxious at the moment, but she will grow up. For now, make sure that you initiate play with her several times a day. Don't always wait for her to start things.
The instant you feel your puppy's teeth touch you, give a high-pitched yelp. Then immediately walk away from him. Ignore him for 30 to 60 seconds. If your puppy follows you or continues to bite and nip at you, leave the room for 30 to 60 seconds.
They should be friendly with strangers and other dogs, and they should not show any “grown up” aggressive behavior like snarling, lunging, or serious biting. Your pup may well become more reserved around people and less tolerant of annoyances as he reaches adolescence and adulthood, which can be perfectly normal.
Say "No" firmly, but calmly, when a puppy exhibits any signs of aggression, including biting. Wrap your hand gently, but with authority, around his muzzle. You must show the puppy that you are in control, but not hurt or frighten him. Do not cover his nose.
For dogs under 6 months of age, much hyper and aggressive behavior is simply puppy play. But that doesn't mean that you should just green light it and allow it to continue. You must teach your puppy boundaries and the earlier you teach them the better.
For a dog who is acting out of fear or frustration (for example, a dog who is barking and lunging on leash), using the word 'no' to stop the behavior without helping to alleviate their fear or frustration will often lead to an escalation in behavior, such as growling, air snapping, or biting.
Growling, snapping, biting, stiffening, cowering, lunging, prolonged alarm barking, prolonged raising of hackles in response to people or animals. Seek behavioral help NOW.
Contemporary experts urge against all uses of physical discipline. Tapping or bopping a dog on the nose can be misconstrued as playful behavior, and being too rough with your dog can actually trigger biting, reactive, or defensive behavior.
Give your puppy an alternative item to chew
If they start nibbling at your fingers or toes while you're playing, offer a toy instead. Again, if they continue to nip, stop the play session immediately. If you've been training your puppy to sit, you might also redirect them by asking them to sit and rewarding with a toy.
While yelling at your puppy for biting is not advisable, it is okay to use a simple, firm signal such as “No!” when they make a mistake. If your puppy gets nippy while playing, stand up, take your hands away and say “No!” Once they're sitting calmly, reward them with a treat and go back interacting/playing with them.
Although accurate temperament testing is not possible at a very young age, you can get a general assessment of your pup's personality. Does he seem interested in play? Does he sniff or nudge your hand when you hold it out and welcome your touch? Is he comfortable around people or does he cower when you approach?
In one posture, hold the pup over your head, firmly supporting him with both hands and stare into his eyes (staring is a dominant behavior to the dog). Maintain this position until the pup has been still for 10 seconds. He must be still for that length of time or he hasn't submitted to you.
Most puppies are through the worst of the biting phase by about four months old. After about six months of age, some puppies begin to show signs of fear aggression. This means that they may growl or snap at strangers who approach or try to touch them.
They're not being malicious when they bite you, they are simply doing what they are instinctively programmed to do. There are much better ways to deal with it that don't involve hurting your puppy and making her fearful of your hands coming near her face.
this is perfectly normal puppy behavior, driven by primitive instincts to get feedback on their mouths. They may jump at you, they try to entice you to play and they seek attention by biting at your hands, your clothes, your shoes.
It is common for puppies to bite or "mouth" hands and clothes during play or when looking for attention. As annoying and sometimes painful as this behavior may be, it is normal and an important developmental behavior.
A confident dog wanting you to move away will often deliver a low-pitched warning growl. His body will stiffen and the loose circular wag may become a stiff side-to-side motion. 2. A scared dog who really doesn't want to defend himself may make a high-pitched growl-bark to get you to move away from him.
A. Lunging and mouthing are typical ways for dogs to play with each other. This play behavior is especially common in puppyhood, but can continue into adulthood. Certain breeds are more likely to jump up toward the face during play, rather than focusing on the paws, chest or side as other breeds may do.