I noticed Niko was a little lame yesterday afternoon, can't find any cuts or scrapes but his right fore is fat from the knee to just above the fetlock. Carried on doing jobs while pondering what the heck he'd done, taking the wheelbarrow to the muck heap (huge bramble patch in the field, muck in the middle with 6ft wide, 6ft tall walls of bramble around it, bar one spot where there is an electric fence gate) I noticed all the brambles to one side of the gate had been eaten, as I tip the wheelbarrow I see hoof holes in the muck where he'd sunk to his knees - that explains that then!