Adrienne is a certified dog trainer, former veterinary assistant, and the author of "Brain Training for Dogs. It is very frustrating when you watch your dog incessantly and obsessively licking their paws, especially when they lose interest in everything around them. There are specific reasons for this behavior, and it is up to you, as the owner, to try to figure out what the problem may be. If the behavior appears suddenly, continues for an extended period of time, or is accompanied by bleeding, swelling, limping, or odor, the best thing to do is to see a veterinarian and have them do the investigative work with the right diagnostic tools. While it's normal for dogs to groom their paws every now and then, too much licking is often indicative of an underlying problem.