There are several medical issues that can interfere with potty training. Dogs with a urinary tract infection (UTI) will urinate frequently in small amounts, and will not have much control. You may also notice excessive licking of their genital region. If you notice a change in the consistency of their stool, the cause could be a gastrointestinal issue. Some common causes in puppies are intestinal parasites, having eaten something not in their normal diet, or a sudden food change. If a food change is necessary, do it gradually over 5 to 7 days. If you suspect any of these issues could be a problem, you should consult with your veterinarian.
Some training methods use punishment, like leash corrections and scolding, to discourage dogs from doing everything except what you want them to do. Other methods cut right to the chase and focus on teaching dogs what you do want them to do. While both tactics can work, the latter is usually the more effective approach, and it’s also much more enjoyable for you and your dog. For example, you can easily use treats, games and praise to teach your dog to sit when people approach during walks in the neighborhood. If your dog is sitting, she won’t be dragging you toward the people, jumping up when they get close enough, mouthing on their arms and legs, and so on. That’s pretty efficient training-no pain or intimidation needed. Alternatively, you could grab your dog’s leash and jerk her to the ground every time she jumps up to greet people, and you’d most likely get the same effect in the end-no more jumping up. But consider the possible fallout: go here for more
It's not so much the dog doesn't listen, more that he doesn't understand what you want him to do. Go back to basics and don't punish him when he toilets indoors. Double your vigilance and take every opportunity to put him outside to toilet. The crucial thing is to be present when he does toilet in the correct place, so that you can reward him. This makes him keener to repeat the performance to get another treat. Conversely, if you have been telling him off for indoor accidents he may already feel inhibited about going to the toilet in your presence, including when he goes outdoors. This is one reason why it's important not to punish for inappropriate toileting.
Step 1: Give the command to sit. After waiting five to eight seconds, go ahead and use the vocal command with a hand motion of your choice to tell your dog to be released from his sitting position. If you act excited while doing this, your dog should naturally release. When he does so, click and treat. Repeat this step until your dog is consistently releasing.
If your dog isn’t giving you an obvious signal that they need to go out (like whining at the door) I suggest teaching them to ring a bell when they need to go outside. Some of the other signs dogs give that they need to go out such as pacing around or circling can be easy to miss if they’re in another room, which is why a noise based signal such as ringing a bell can make things easier. How do I become a certified dog trainer?
The process is the exactly same for older dogs as it is for puppies; prevent accidents from happening by using baby gates and a crate if possible, create a predictable schedule, learn to recognize your dog’s potty signals, accompany your dog outside and immediately reward for all outdoor elimination, properly clean any accidents and supervise your dog until you’re sure that he understands the rules.
Many behavior problems can be prevented by providing “legal,” acceptable ways for your dog to express her natural impulses. There are some things that dogs just need to do. So rather than trying to get your dog to stop doing things like chewing, mouthing and roughhousing altogether, channel these urges in the right direction. Increased physical activity and mental enrichment are excellent complements to training. Please see our articles, Enriching Your Dog’s Life, Exercise for Dogs and How to Stuff a KONG® Toy, to learn more.
Consistency is crucial. This may mean taking time off work to be there to take the pup outside every 20-30 minutes when they are awake. Crate training will also help the 'penny drop' as it teaches the pup to hold on until taken outside. Then, be sure to stay with the pup in the yard so you are there to reinforce how clever they are when they do go in the right place.