Just because your new dog is old enough that he should know where to potty doesn’t mean that he actually does. An adult dog has the necessary muscle control to hold it for longer periods of time, but if no one ever taught him the potty training rules then he’s the equivalent of a brand new puppy. Age should not be equated with housetraining prowess, so it’s a good idea to treat any dog new to your home as if he’s still learning the potty training ropes.
Consequences must be consistent When training your dog, you-and everyone else who interacts with her-should respond the same way to things she does every time she does them. For example, if you sometimes pet your dog when she jumps up to greet you but sometimes yell at her instead, she’s bound to get confused. How can she know when it’s okay to jump up and when it’s not? Dog Training

The female dog can bear another litter within 8 months of the previous one. Dogs are polygamous in contrast to wolves that are generally monogamous. Therefore, dogs have no pair bonding and the protection of a single mate, but rather have multiple mates in a year. The consequence is that wolves put a lot of energy into producing a few pups in contrast to dogs that maximize the production of pups. This higher pup production rate enables dogs to maintain or even increase their population with a lower pup survival rate than wolves, and allows dogs a greater capacity than wolves to grow their population after a population crash or when entering a new habitat. It is proposed that these differences are an alternative breeding strategy, one adapted to a life of scavenging instead of hunting.[45]
In the US between 1979 and 1996, there were more than 300 human dog bite-related fatalities.[99] In the US in 2013, there were 31 dog-bite related deaths. Each year, more than 4.5 million people in the US are bitten by dogs and almost 1 in 5 require medical attention. A dog's thick fur protects it from the bite of another dog, but humans are furless and are not so protected.[100]
Unfortunately, there is no magic length of time or milestone age when a puppy can be considered fully housetrained and there are many factors that go into how quickly a puppy can be potty trained. Your puppy’s age plays a major role during the initial phase of potty training, as a very young puppy won’t have the muscle control necessary to hold it for long periods of time. go here for more
If your puppy just can’t seem to get the hang of potty training at this point and continuously has accidents in the house, you may consider taking him to a veterinarian to rule out any medical conditions. It’s possible that he has a physical issue that’s impeding his ability to “hold it,” in which case you would want to get him help for the condition as soon as possible. more
In the UK between 2005 and 2013, there were 17 fatal dog attacks. In 2007–08, there were 4,611 hospital admissions due to dog attacks, which increased to 5,221 in 2008–09. It was estimated in 2013 that more than 200,000 people a year are bitten by dogs in England, with the annual cost to the National Health Service of treating injuries about £3 million.[97] A report published in 2014 stated there were 6,743 hospital admissions specifically caused by dog bites, a 5.8% increase from the 6,372 admissions in the previous 12 months.[98]

Depending on your schedule and your individual dog’s temperament, you may consider using a crate to aid you in potty training your pup. If you’re comfortable using a crate, it may help you keep a better eye on your dog, so you’re better able to recognize his signals that he needs to eliminate. A crate can also teach your pup that he needs to “hold it” until you open the crate and bring him outside.
From a young age, dogs engage in play with one another. Dog play is made up primarily of mock fights. It is believed that this behavior, which is most common in puppies, is training for important behaviors later in life. Play between puppies is not necessarily a 50:50 symmetry of dominant and submissive roles between the individuals; dogs who engage in greater rates of dominant behaviors (e.g. chasing, forcing partners down) at later ages also initiate play at higher rates. This could imply that winning during play becomes more important as puppies mature.[11] dog training tips
The TBI Pro Dog Training Collar with Remote is for any sized dog, so you won’t need to worry about sizing before purchase. You can control whether to emit a vibration or a shock and you can control even beyond that by determining how strong each of those will be. Each range from 1-100 power levels. So you can try a gentle reminder for the first offense and a bit stronger for repetitive behaviors.
Training collars typically use vibrations or static simulation (or a mild electric shock) to foster obedience, whether you’re trying to stop an aggressive behavior or teach your dog to walk with a leash. While many of these products can be expensive, this one from Mockins checks all the major boxes and comes at a low cost. Fitting dogs 15 pounds or larger, it offers 100 levels of vibration and static shock, with the delivery preceded by a warning tone. It’s also waterproof and fully rechargeable.
The A+ TRAINERROOPZ Dog Training Collar with Remote features beep, vibration and shock discouragements and variable levels within each. With this, you’ll be able to control the intensity (with 7 different levels) to create stronger deterrents if your pup requires them and stick to the minimum if your pup just needs an occasional reminder. The long-lasting battery will keep you from constantly replacing and will allow you to train your pup without worrying about it dying during a critical training exercise. 

Reasons for aggression are basically the same as the reasons a dog will bite or snap, but overall canine aggression is a much more serious problem. If your dog has aggressive tendencies, consult your vet first as it may stem from a health problem. Then, seek the help of an experienced dog trainer or behaviorist. Serious measures should be taken to keep others safe from aggressive dogs.
It can get rather frustrating if your dog likes to dig up your yard. Try and determine the cause of the digging, then work to eliminate that source. Give your dog more exercise, spend more quality time together, and work on extra training. If digging seems inevitable, set aside an area where your dog can freely dig, like a sandbox. Train your dog that it is acceptable to dig in this area only.
Training collars typically use vibrations or static simulation (or a mild electric shock) to foster obedience, whether you’re trying to stop an aggressive behavior or teach your dog to walk with a leash. While many of these products can be expensive, this one from Mockins checks all the major boxes and comes at a low cost. Fitting dogs 15 pounds or larger, it offers 100 levels of vibration and static shock, with the delivery preceded by a warning tone. It’s also waterproof and fully rechargeable.
Martingale collars are the humane successor to the choke chains of old. They operate in a similar fashion, with the collar tightening when your dog starts to pull. But because of the limited closure, it’s much safer and won’t actually choke your dog—just adjust to the size of their neck. For that reason, it’s also a great choice for pet owners whose dogs have a habit of slipping out of their leash. more on this
The remote will actually let you train two dogs at once thanks to its dual functionality, all you need is an extra collar. There are 100 vibration levels, and you can choose whether to solely use vibration or sound, as well as both. The collar is also a one size fits all, so you shouldn’t have any trouble adjusting it to your dog. Completely waterproof and with rechargeable batteries, it was built to last. 
If you run into trouble, go back a few steps If you’re training your dog to do something new and you stop making progress, you may have increased the difficulty of the skill too quickly. Similarly, if you’re practicing a behavior your dog hasn’t performed in a while and she seems a little rusty, she may need some help remembering what you want her to do. If you run into training challenges like these, just refresh your dog’s memory by making the skill a little easier for a few repetitions. Go back to a step that you know your dog can successfully perform, and practice that for a while before trying to increase difficulty again. more on this

Waterproof. There are varying degrees of waterproof and you may opt not to get the 100% water proof version but we highly recommend having some water resistance for a dog training collar. There are simply too many actions dogs commonly take that accidentally get water on them. They could run in the rain before you get them in or they could splash through a mud puddle. Just the act of drinking their water could slop water up onto their collar without any real surprise to a pet parent. Take some precautions to prevent ruining the collar you choose.
This is where a training collar comes in handy, but in the UK we have something a little different to the type of collar that has automatically entered your head. Electric shock collars are banned in the UK because they are cruel and can harm your dog (something you can learn more about in the FAQs a little later on). As a result, we have had to find other solutions that will still kerb bad habits without hurting your pup. These are in the form of vibrations, sound, and a citronella spray.  more on this
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