Can anyone help with some advice about one of our dogs.One of them keeps getting a swelling on one of his front paws. It has happened 4-5 times in the last year. The first we see is when he starts to limp and we then see a small swelling ususally on the top of one of his front paws. There are no puncture wounds we can see and we end up after a day or so, having to burst the growing swelling and draining the samll amount of pus and blood which has, in all cases, stopped the problem. He is a Terrier and is always digging, putting his paws into holes, chasing lizards, etc. We have snakes on the land but there are no signs of puncture wounds, especially double ones, we can't see how a lizard could cause it and we never find any debris so as thorns or anything else. There are a few toads on the land and he often sticks his nose into them but could a toad cause such a problem. The presence of pus obvioulsy points to something which has become infected - but what?I know that most of you will say go to a vet but our vet operates by looking in a book to see what each breed suffers from and then diagnoses that, we don't have too much confidence. Any ideas warmly received and Ted says thanks in advance.