Tina, a lot of people don't like the "thought" of bark inhibitors, but would you use one or risk loosing your dog? The collars work on vibration from the vocal chords, howling would trigger a correction the same as barking, some collars allow whining but if its loud then the the vibration usually triggers a correction. Have a look on the dogtra website and invest £60 odd quid on a colar that wil stop your problem the day it arrives. You could also purchase a dummy collar, dogs aren't stupid and soon learn not to bark when the collar is on, you can then switch to a dummy collar. Don't be t