When your dog is licking their paws it can be a sign of boredom, anxiety, something in their paw or the dogs paw may be hurting.
If your dog does not stop licking it's paws you should first look at the paw and see if the dog has any sores or something such as a thorn stuck in the paw.
Then if it continues it may because the dog is simply bored or they may have a parasite in the paw or a rash on the paw.
You can try taking the dog for a walk, distract the dog by doing something such as playing with the dog etc.
There's not much you can do for paw licking and it will usually stop eventually.
But if the paw licking continues for more than a few days or a week and you cannot find anything wrong with the dog then something could be wrong.
My dog will lick his paw when he's about to throw up and sometimes the dog will also lick the carpet and then throw up within about 10 minutes of doing so.
When a dog licks their feet constantly then it could be a sign of the dog having anxiety, the dog could be nervous, dry skin, flea allergies or other allergies.
Your dog may also have something in it's paw that they are trying to get out especially if you also notice the dog is also trying to bite at their paw while they continue licking the paw.
Some paw licking or dog feet licking is normal behavior as they use their tongue to clean the paw but excessive paw licking is caused by something that is wrong with your dog.
Check the dogs paw for any splinters or something that could be in the paw and also check for any sores that the dog may have on it's paw.
The dog may also just be licking it's paws because the dog is bored.
If you think something is wrong and the dog continues to lick his paws or paw constantly for more than a few days then you might want to call a vet and have the vet check the dog out.