Throughout my life, I've always had dogs, but not once the problem that our new Boxer(2 1/2 male rescued from maltreatment) is giving us.

An unhealthy interest in sheep, I know damn well that if he got out, or off his lead, he would head straight for a field of sheep. We live in the country, near to many fields of sheep, it's a serious concern.

Anybody know how you train it out of them?