Our 9 year old Jack Russell Sasha is the absolute best. She has never gave me any feeling that she would snap on Our 14 month old Jameson. However she has her corks as all dogs do. I had purchased in he past the Our K-9 Bark Collar when I was pregnant to control her barking. It worked to a degree. Now the issue has become that she has a problem with certain toys that Jameson plays with. I chose to purchase the Altman Dog Training Collar that comes with a remote. Day 1 and it has her shook. It has 3 options of beeping, vibrating and shocking. I will only use the shock option as a last resort. The vibration is doing the job as of right now. Every time she goes after a toy I hit the button and she bails. I have confidence that being consistent we can nip this behavior problem in the butt.