Aggression with my Jack

by Kathleen
(Reading, MA)

My Jack Russell Terrier, Cooper age 22 months has become aggressive about being groomed. Last week the groomer called and said come get him we can't finish him. Yesterday I tried to remove a tick from his back and he became very upset with me, growling and snapping.

He previously had an issue with sudden movements, but I think we have resolved this.

Any suggestions are appreciated. He's a real sweet dog and very affeciate when he wishes.