"Neil" wrote in message
...
Any idea whether this looks rodent-caused?

The concensus here is for a rodent and that is probably the case, but I
would have thought you would see some droppings around the area on top of
the fibre fill.. Can't see any in the pictures. The size of the droppings
and the teeth marks will tell the size of the culprit.

Many here have suggested poison, but consider that if taken the creature may
crawl into some inacceesible cranny and die subsequently producing a very
unpleasent and hard to elimnate smell. Better to find some way to get him
out or someone to capture him alive to make sure he is out.
NOT speaking from experience.

Roger R