Can a dog who is almost four years old still teach him to go to the toilet? If so, how?

It should be a urethral stone or other urethral problem. The main cause is the imbalance of the pH value of the urine, which leads to the formation of stones. This has to do with the pH of what you eat. The dog's urine pH value is between normal and preferred.

There is no can't, the key is whether the owner has enough patience and love.

It's a little harder than a puppy. You can use a piece of paper towel to dip it in and take it to the place where you want it to be convenient. Except for that place, you must clean the rest of the place to be fairly clean and not leave any smell. >>>More

Teach slowly, slowly guide you can still learn to use the toilet, it is best to teach the dog after he is familiar with the new environment. >>>More

Dogs don't hold their urine when they're young, so it's normal to defecate and defecate in the open often. In the process of urinating and defecating at will, you must first beat it with a stick made of newspaper, and at the same time yell at it, telling it not to urinate in this place, and then immediately carry it to the designated place. Usually because of the previous fright, the puppy will not continue to pee, but will run to the place where it wants to pee while you are not paying attention. >>>More