I have been a dog trainer for about 16 years now and see this behaviour countless time. Most commonly on shepherd typed dog. But some hunting dog do it too.
It's always linked to how focus the dog is something. It's also when you repeat multiple time the same command that you trigger this behaviour. Like they focus on it.
It's always linked to how focus the dog is something. It's also when you repeat multiple time the same command that you trigger this behaviour. Like they focus on it.