As long as your dog is where it needs to be in training(and training remains ongoing) then you should be fine. Mine is going to be two and I'm hoping to get another by the end of the year. They are quite addicting, aren't they?
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD