A dewclaw is a small, extra toe or claw on the leg of some animals, like dogs and cats. It doesn't usually touch the ground when they walk, and it's not very useful for them. Full definition
My Great Pyrenees will never have her double dewclaws removed. (dogingtonpost.com)
Breeders usually choose to remove dewclaws on puppies in the first week of life as they can be detached easily and do not require any stitches. (petsmagazine.com.sg)
It is much better to prevent such problems with rear dewclaw removal in most cases. (miniatureschnauzer.ca)