Whileon the hunt for adders for her Wild Five series, Leah found a snake skin on the ground.
She's a bit scared of snakes, so watch the clip to see her reaction!
The expert she was with reckons it could belong to adder.
Leah's been busy travelling all over the country to bring you five animals that are facing big problems right here in the UK. This time she's taking a look at adders.
If you like this report, you're in luck - there's loads more from Leah coming soon!