We have a 3 yr old Airedale terrier (he' our 4th) named Ozzy. We live in a rural area in Ontario, where he runs free most of the time. We have trained him with a correction e-collar. (after classes). Since he is our 4th Airedale he is very well behaved and is considered to be the 'good will Ambassador' at any boarding kennel that he goes to.