sorry to bother you all again lads /lasses- troy is 12 weeks old now [springer] and he does a lot of scratching to the back of his front legs- his backside is a little thin on hair also [he was like that when I got him] he is fine and healthy in every other way [little terror to tell the truth ] he is on dry food beta grey hound & was wondering if the food is triggering something off or could it be his bedding [straw] he has no fleas & been treated with fipronil drops any ideas please -billy