Dogs have a toenail located on the inside part of their front leg that’s called a dew claw. Most dog owners know where it’s located and remember to clip it at the same time the rest of the dog’s toenails are trimmed. If this nail is left untrimmed, it can cause pain and damage to the dog’s leg. Some dog breeds have dew claws on their back legs as well. What is the purpose of a dog’s dew claw, and why do some breeds have them on their back feet?
Because a dog’s dew claw is located up on his leg, when he walks through the grass in the morning before the dew has vanished, the claw skims along the top of the grass. And that’s how the dew claw got its name.
Not all dogs are born with dew claws, some only have the toenail on the front leg and other breeds have them on all four legs. Some breeds can have two dew claws on one or more legs. When a dog has a double claw on a leg, it’s called polydactyl. Some dog breeds are required to have back dew claws if they are being shown in the ring because it’s part of the standard for that breed.