I have two labs. One, the boy, is nearly six years old and the other, a girl, is four. Both neutered / spayed.
They get on so well. They are great dogs. Gentle. Obedient. Friendly. Affectionate.
Except on walks. In the last six months, dog will attack the bitch at the start of a walk and at every gate we pass through. She will stop, scared to come through gates and then will bolt through trying to escape him.
He chases her, really bites her ear and bullies her.
I obviously stop it every time and really tell him off, put him on lead, keep my girl near me etc. Nothing works to improve his behaviour.
What is going on? At home and in the garden they are fine. It’s just on walks that the dog behaves like this and only to the bitch.
Advice please!