Dog is not housebroken: what to do?
A dog goes into the apartment if he has not learned to detach himself outside. A young dog will not be house trained if no one teaches it. However, your four-legged friend may also pee on the floor because he simply cannot hold on to him.
Dog makes in the apartment: possible causes
First of all, you should consider what could be the reason that your dog is going into the apartment. Is your four-legged friend still a puppy and only recently at your home? Then he will most likely still have to learn where to do his business and where not. This is normal and shouldn't be a concern. It is also possible that you rarely go for a walk with him - a small puppy sometimes has to "potty" every two hours.
If an animal shelter dog comes to your house and turns out not to be house-trained, there is a possibility that it never was. The origin of the dogs in the shelter cannot always be traced back completely and sometimes people who leave their pets in the shelter are not entirely honest about the reasons for this. However, this should in no way prevent you from adopting a dog from the shelter. Older dogs can also learn to be house-trained if they learn enough love, patience and consistency from their new human parents. If your dog was already house-trained and solving it in the apartment is a new behavior, there may be health problems, signs of aging or mental illness.
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Dog will not be house trained: be patient
A dog will not be house trained if you do not take enough time to teach it. It can take a long time from animal to animal before he has internalized the principle of only first emptying his bladder outside and notifying him when he needs to. This can take several weeks to months. This also applies to shelter dogs that may never have been house-trained. They may even take a little longer until they no longer go into the apartment because they have got used to the unwanted behavior beforehand.
You can help your darling not to leave a puddle or a pile where he is not allowed to. Pay special attention to your dog's body language and go out with him as soon as he becomes restless and shows that he has to. This can be a glance at the door, sudden nervousness, running back and forth or the demonstrative sitting in front of the door. Puppies have to go out about every two hours, later the distances between the gas laps can be extended. Small dogs also have to pee at night.
Penalties almost never help against uncleanliness
When he's done with his business outside, praise him and reward him with a treat. Then walk for a while so that your dog does not understand that he has to go back home immediately after he has released himself. Otherwise, there is the possibility that he will delay the peeing so that he can sniff and discover longer, stop walking and only start piling or puddling again in the house because he can no longer control himself.
Your dog won't go to the apartment unless he knows of any other way out, not because he's angry or stubborn. So it doesn't make sense to punish him for it. The only thing you can do if you catch him in the act is to give him a clear "no" or "ugh!" to say that he shouldn't and go out with him immediately. But don't scold him and never, never ever, dip his snout in his legacy.
Otherwise house-trained dog pees everywhere: is he sick?
Does your dog go into the apartment even though he was already house-trained? Definitely go to the vet with him, he may have bladder infection or kidney failure. If your vet has ruled out a physical cause of the mess, there may be fear or stress behind it. An animal psychologist can then help you.