Predator chewing through wood and stall mats?

[lazy gardener]

I have not read this entire thread, but here's my thought: Weasel, or member of that family. Look up! I'm wondering if the perp is holed up in the barn, and possibly entering from above. A weasel can get through any opening you could push a quarter through.

 

[Hensndoes]

X2 on the last two posts. Original kill fits a weasel or of the like. I suspect it's not going away until you catch/dispatch it. Sorry.