well this morning unwrapped dogs foot and just looked red and swollen no sign of any thorns or seeds, so took him to vet who said he must have slipped on rough surface and scraped it and has an infection so got some antibiotics for it.
also said his pads were really dry and recommended some cream called mushers secrete something used on sled dog feet.
so he know getting a twice daily bloody pedicure ?
thanks all for the replys.