Peed on his play mattress
I understand that puppies pee a lot and we are still trying to potty train him. How long do you think it takes approximately? Vito is just 3 1/2 months and as we live in an apartment, we are trying to get him to pee on the balcony as he just won't use the toilet.
However today he peed on this mattress that he usually plays on which is kept on the floor. He has never done it before, always all over the house but never on the mattress. Is it normal?
Any advice will be great.