Experienced and professional animal trainer provide their insights in answering this question :
A. This is common behavior in a young teething pup trying to learn more about their surroundings. You can help teach the puppy by providing plenty of safe chew toys and treats such as Nylabone and bully sticks. Only greet the puppy while calm and walk away if pup keeps biting. When puppy bites just freeze and offer a toy to redirect puppy to instead. Also ensure pup is getting plenty of exercise. Feeding meals out of a kong is a good way to provide mental stimulation which is also a form of exercise.

How to Identify Common Pet Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced pet care professionals :

Instead of giving your puppy time-outs for hard biting, start to give him time-outs every time you feel his teeth touch your skin. 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.
When she is loose and attacking your clothes and legs, stop moving and ask her for another behavior that you will reward. If this doesn`t work, calmly put her in her crate with a small treat for a puppy timeout. The crate time is not punishment, it`s nap time.
Puppies should naturally slow down and stop biting around 7 months of age, when all of their adult teeth are in, and they`ve learned to play with toys and appropriate chews.
Puppies start teething at about 8-9 weeks old. They will chew on and bite things – and you – to relieve the pain and dislodge their baby teeth. Puppies also bite – or mouth – as a way of exploring new things. You can teach your puppy to be gentle and to not nip or bite.
Some common factors include: Lack of exercise: Puppies have a lot of energy, and if they don`t get enough physical activity during the day, they may become hyperactive at night. Attention-seeking behavior: Puppies may act out to get attention from their owners, especially if they feel neglected or bored.
Never hit or bite a puppy that bites you. That will only make your dog afraid. If your dog continues to try to bite your hand, stop what you are doing and walk away. If you are playing, stop playing immediately.
Normal Biting

Dogs go through two to three months of teething during puppyhood, and using their teeth is how they can express themselves. Puppy biting is especially common among certain breeds; for example, retrievers are much more oral by nature therefore are inclined to pick up and grasp objects with their mouths.

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.
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.
When puppies play with each other, they use their mouths. Therefore, puppies usually want to bite or “mouth” hands during play or when being petted. With puppies, this is rarely aggressive behavior in which the intent is to do harm.
Puppies less than 12 weeks of age that react to pain or fear by growling or snapping are responding abnormally. Puppies in a dog pack would be attacked if they responded aggressively to correction by an adult dog. It isn`t normal brain development for a puppy to do that to people or other dogs.
At this age, your pup has left the infant state and is more like a little toddler. And much like two legged babies at this stage, your pupper is prone to mischief. During the next little while, if you aren`t busy chasing them, you will be watching them closely.
Statistics show that Pit Bulls are the type of dog breed that bite humans the most, with Rottweilers and German Shepherds being the second and third most likely to bite.
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.
Your dog should understand that their place is on the floor where they are not equal to you. For the same reason you are discouraged from getting on the floor with your dog to play in “their territory,” you should not bring your dog into your territory.
The best bet for curing for puppy biting is to place your hand in front of their mouth. When they bite, pinch the jowls lightly until they stop. Usually, he`ll take the bait again. When he does, I`ll pinch the jowls again but with a little more pressure this time.
Most mouthing is normal dog behavior. But some dogs bite out of fear or frustration, and this type of biting can indicate problems with aggression. It`s sometimes difficult to tell the difference between normal play mouthing and mouthing that precedes aggressive behavior.
When we say “no” to a toddler or a dog, it usually means “stop what you`re doing right now” but a dog doesn`t know that. It knows you`re not happy – your body language and tone of voice will convey that. But as far as we know, it doesn`t realise why and it certainly doesn`t know how to respond.
They mouth or nip during play, or out of excitement or impatience: Some dogs may mouth your hand or nip at your heels while playing with you, especially when they`re excited or being chased. Herding breeds and those with a higher prey drive may also nip or bite as a natural instinct.
Sometimes, it can even be hard to know why this is happening. Dogs typically bite just one person in the household because they have a bad past experience, aren`t well-socialized, or the person doesn`t know how to interact properly with dogs. It could also be resource-guarding behavior.
Signs that your dog`s aggression or aggressive behavior is dominance related may include signs such as: Aggressive behaviors in response to verbal corrections. Aggressive responses triggered by eye contact. Attempts to herd other pets or humans using nipping.
There are multiple reasons that a dog may exhibit aggression toward family members. The most common causes include conflict aggression, fear-based, defensive aggression, status related aggression, possessive aggression, food guarding aggression and redirected aggression.
Why Do Puppies Growl? Growling can seem aggressive, but it is simply one way that puppies and dogs communicate. They let you know if they`re uncomfortable, afraid, or upset about a certain situation. Growling is also a warning.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. How do I get my dog to stop chewing on things? I kennel her when I leave for a few hours, but I can’t go to the mailbox without her eating something.
ANSWER : A. If she’s young, then this is just normal puppy behavior. Don’t worry about it. The thing about puppies is, they explore using their mouths. If your puppy grabs a coat hanger, or a slipper, you should roll up a newspaper, and smack yourself on the head with it for leaving those things out.. your puppy is going to explore things, that’s normal! It is 100% up to YOU to keep those things away from your puppy when your puppy is unsupervised… even for just a moment.

Remember to never scold your puppy for grabbing these things. They are just curious little cuties, and they don’t chew things up to bother us.. Dogs do not have intentional thought, so they aren’t ever doing anything ON PURPOSE to us.. The most important thing you can do when your puppy is chewing something you don’t want her to be chewing is TRADE her the inappropriate item with a toy of hers, so she understands “no honey, that isn’t what puppies chew on… THIS is what puppies chew on!” and then begin playing with her using her toy to show her that TOYS ARE FUN.. Way more fun than a boring ol’ coat hanger.

Another helpful thing you can do is have two bags of toys. In each bag is many different kinds of toys. Lots of chew toys, lots of soft squeaky toys, lots of rope-type toys, a bunch of balls.. All kinds of things! For one week you have bag#1’s toys out for your puppy to play with.. At the end of the one week, you collect those toys, and you bring out bag#2! The toys will be more interesting/feel like new to your puppy, which will in-turn, make her chew less inappropriate things. Her toys are too fun to care about that dumb Wii-mote that you left laying around.

Hope this helps!

Q. How can I stop my 9 week old puppy from biting?
ANSWER : A. This is common behavior in a young teething pup trying to learn more about their surroundings. You can help teach the puppy by providing plenty of safe chew toys and treats such as Nylabone and bully sticks. Only greet the puppy while calm and walk away if pup keeps biting. When puppy bites just freeze and offer a toy to redirect puppy to instead. Also ensure pup is getting plenty of exercise. Feeding meals out of a kong is a good way to provide mental stimulation which is also a form of exercise.

Q. How can you help stop your dog from ‘play-biting’ and ‘mouthing’ when I’m trying to touch him in any way?
ANSWER : A. Is it still a puppy? It is a lot easier to stop a puppy from doing it than an older dog that has been doing it for sometime.
Try this…..as soon as it play bites or jumps up at you. Stop playing immediately stand up and turn your back on the dog, ignore the dog, even carry on with other tasks, or talk to someone else. Once dog stops then try stroking it again, as soon as it play bites again, stop and keep repeating until he doesn’t do it anymore. For it to be successful EVERYONE needs to do it EVERYTIME. Even with a young puppy it may take a couple of weeks. But it will take longer if you don’t persevere.

Q. My puppy is 15 weeks old and is biting me. I can’t seem to stop her. What should I do?
ANSWER : A. Biting and nibbling is very common in puppies, as like infants, they tend to explore their environment with their mouths. As a puppy hits about 5-7 months of age, her adult teeth will also begin to come in, making his need to chew even higher! Providing plenty of distracting chews as well as teaching some bite inhibition can help to save your fingers! Chew toys such as thick canvas toys, toys that can be cooled in the fridge to soothe sore gums and toys that treats can be hidden in make for a great chew experience. If your fingers and hands are the target, letting out a loud “YELP!” and walking away can also teach your puppy that you do not enjoy her nibble sessions. Another way to teach bite control is through “air-planing” treats which involves slowly moving the treat down to your dog’s nose. If she jumps or gets too excited, remove the treat and start again. If she stays calm and doesn’t lunge, award her the treat. This can help teach her patience and control when playing with people!

Q. My puppy is urinating a lot. And the lady I gave one of the puppies to said she thinks her puppy has diabetes could my puppy have it to
ANSWER : A. It is not likely that either one of these puppies has diabetes. It is very uncommon for a puppy that young to have diabetes. If your puppy is straining to urinate or is urinating very small amounts frequently and cannot seem to wait for very long between urination, he may have a urinary tract infection. It is quite possible that your puppy is completely normal. I would suggest an exam with your veterinarian and discuss the behavior with them. They may suggest a urinalysis. Your puppy should be going to the vet at 3 week intervals for vaccinations at this age, so you can discuss it when he has his next set of vaccines. The other person with the other puppy should also be taking hers to a vet for proper immunizations and she should also discuss her concerns with her vet.

Q. How do I get my 10 wk old puppy to stop biting? He only bites me and my fiancé but licks everyone else. Tried bitter bite spray but he just barks.
ANSWER : A. When greeting your puppy, you should present an appropriate alternative for him to chew on. This can come in the form of toys. It’s normal for this age for puppies to be bitey. When you greet him, immediately offer a toy for him to chew on and calmly pet him. If he bites you instead, there are a few things you can try. You can yelp loudly startling him just as a sibling would do. You can freeze not jerking your hand away since that can likely become a game to him and you can also keep him secured in a play yard where if he bites, you can simply remove yourself from him so he learns all a attention goes away when he bites. Only give attention when he is calm.

Read Full Q/A … : Leerburg

Q. My 3 month puppy eats his own poop and is also biting what can I do to prevent this
ANSWER : A. When it comes to poop eating, you want to consider a few things. First off, what is his diet like? Maybe something is lacking in his diet that is causing him to want to eat his own poop. This is the most common reason why dogs eat THEIR OWN poop. Try a higher quality kibble like Taste of the Wild, Ziwipeak, Orijen.. and try feeding three meals per day, instead of the more common two meals per day. Remember to gradually switch his kibble. Add a little bit of the new kibble and reduce the old kibble very slowly.. little by little every couple of days until the bowl is mostly new kibble! You should also be cleaning up his poops IMMEDIATELY after he does them.. I mean like, you have a bag in your hand, and you are low enough to scoop it up RIGHT when he finished so he doesn’t have a chance to eat his poop.

When it comes to nipping there are a few things you can do. First, you should yelp as soon as the teeth touch your skin, stand up, cross your arms, and ignore the puppy until he is ignoring you. Once he is off doing his own thing, swoop down and calmly reward him by playing with him WITH A TOY so he doesn’t nip your hands. Whenever you pet him, or interact with him, you should always have a toy on-hand so you can give it to him. This toy should be a soft braided rope toy that YOU own. This means, your puppy is never allowed to have this toy on the floor, and your pup can never “win” tug games with this toy. This is YOUR toy that disappears when you’re finished playing, and reappears when you want to play. If you keep this up, in a weeks time, your puppy will be so excited to see that toy, that as soon as you bring it out, he stops nipping you because he wants to play with the toy. Another thing you can do is have two bags of toys. Bag#1 is full of chew toys/soft toys/squeaky toys/etc. After one week, Bag#1 disappears and out comes Bag#2. Bag#2 has the same types of toys as Bag#1, and it only stays out for one week. This keeps the toys feeling like new to your pup!

Q. What solid food should I start 4 week old Pit Bull puppies on?
ANSWER : A. A puppy food designed for large breed puppies can help with rapidly growing bones and joints and can be given in a wet form easily to puppies learning to eat solids. You can also provide a dry kibble for them to try and should moisten it with water or some formula to make it easier for the puppies to eat and digest. As the puppies grow and their teeth come in, they will begin to eat and explore more of the solid food on their own.

Mom should also be on a Puppy formula while nursing her puppies as it will provide extra nutrients to both her and babies while they are in a very rapid stage of growth!