Did your mom just "let him out"? If so, this could be the problem..he needs to go out ON leash so that you and your mum can be SURE he's done his business and also so you can reward him for going outside..this helps a lot with housebreaking (indoors no treat, outdoors big party!) It will also help him to learn to go right away when you take him out..this makes a huge difference whenever you are in a hurry...puppies get very distracted by the world at large and sometimes forget to "go" until they are back inside an then can't hold it! So, business first..then playtime or walks or whatever.
But yes, like Hallie mentioned, if it happens frequently, you should have his urine checked.
But yes, like Hallie mentioned, if it happens frequently, you should have his urine checked.
