Actually the breed "theoretically" in question would be a labrador, in my case. Though, it might be any breed of dog at all.
The legislation that springs to mind is the Protection of Wild Mammals (Scotland) Act.
So, you maybe go out round the farm and you're exercising your dog at the same time. Dog under control, taking commands, generally being a very good boy.
It's wet going, he maybe gets muddy and you think... Hmm... time for a bit of a swim fella. I'm not taking you back to the house totally clarty.
Anyhoo, putting dog through the pond and out the clean side you perhaps flush a fox from out of the rashes next to the pond. You've no gun with you or made any other provision to despatch a fox so flushed, when it is safe to do so.
Could you have "flushed" a fox in contravention of the terms of the abovementioned act? ..and thereby commited an offence?
I don't know the answer... Do any of you?