My beagle is a very gentle and loving house dog that lives to run rabbits and deer. She us very well behaved with most commands. The problem I have is at home or at camp she is over protection of the area I am staying in. If any other dog cones near she turns inside out and us gone after then like a bullet. She just chasing them away from her area. Never bite just loud mouth. Would a ecollar work in this case.