
No ideas, I'm afraid but I feel your pain!
I took the dogs for a night's camping last week - our first time - and luckily the site owners put us in a corner of a field, as I was sure one of mine would be gobby. He lived up to expectations and started barking the moment it got dark. Envisaging axe murders and the like I went to look, to find.... a hedgehog. Without an axe.
I didn't sleep well and could see he was awake most of the night on guard, then at dawn off he started again, telling me & the rest of the world there were cattle in the field behind us.