I have a two and a half year old Havapoo (half Havanese, half Poodle). She learned how to press the paw on command in about two days. It's a great device but I wish the area that gives out the sound was a bit bigger and a bit more touch sensitive. There were times when she pressed the side or she wouldn't press hard enough, and she would wonder why she was not getting rewarded. It took her a few days to learn how to press it using the right pressure. Anyway, overall, it's a neat product. She is now pressing it proactively to get us to take her outside for potty.