
Hi, one of ours has had something similar over a period of time. They never became infected and once burst, he paid little attention. They came on quite fast and the first I would know would be him licking between his toes, did ask the vet about them and was given a name, which in typical fashion I've forgotten. As soon as he developed one, bathed it in warm boiled water with a little salt through out the day and at night put on a little sudocrem. Once burst, I continued to bath it morning and evening and used sudocrem again. They healed quickly. He does have very large feet with deep areas between in toes, always kept them clean but now check them 'most' days & haven't had a recurrence for over a year, I believe dogs can grow out of them. If you have any concerns ask your vet.