The animals were in a personal claim that's also under a village claim. In the open, on a paved area (they weren't in a container like a cart or boat, i know there is already a bug about that).
This technically happened during the night of the last day, but i waited so that could ask everyone in the village.
Obviously the area is enclosed and i can't see any scent, even if we were talking about some rather elaborate troll.
We're also talking about an amount of around 10 various animals, ranging from foxes to bears, if it can help. We were waiting for our survivalist's account to recharge his hours, heh.

So, unless skinned animals are indeed supposed to disappear like that, here ends this bug report.