I really doubt she's too old to train. Like FirstYorkie said, it generally takes longer than a week to housebreak. Some people get their pups when they're 3 months old, and they're not fully trained (no accidents) until a year old. However, some people are much luckier and their pups are trained in two-three weeks.
How old is Bella??
__________________ Britta
...and Ferdinand too |