Mine was 2yrs 2 months old when I adopted her, so it was quite easy to housebreak her. She was a Nervous Nellie at first but has made a complete turnaround and become very affectionate. Her one fault, if you can call it that, is her tendency to stalk and kill small animals. She's already gotten a bird and a family of shrews and eaten a worm, that I know of. And this is all on a leash! She is half Rat Terrier.