If you snared on my land, I would go for a full prosecution regardless of cost, or just shoot you in the head.
Makes no difference it's a pest animal, what if you caught an animal I WANTED on my land? like a dog or cat?
Since it's not your land and your just tresspassing you have no idea what animals regularly use the land.
You don't know if the land/estate owner has pet cats, dogs or whatever that could be using the land.