Why does my dog chew his nails?

Ask A Vet: Why Does My Dog Chew Her Nails And/Or Lick Her Paws? Inhalant allergies, also known as Atopy (like hay fever for humans) are the number one cause of repeated paw licking, nail biting and itching of the skin, especially the feet and toes. Dogs then lick the feet and bite their nails because of the itching. read more

But nail biting for dogs is not typically a habit-like or anxiety associated behavior. It is usually a sign of a more physical illness. Some people assume that the paw licking and nail biting are a normal thing for their dog to do as part of cleaning herself, but this is not the case. read more

Healthy paws and nails usually block bacteria and fungi, but one slice of a paw pad, or a broken nail, can deplete that level of natural protection. An infected nail bed is painful and itchy for your poor pup, too; he'll lick and chew his paw and nails incessantly. The area will usually be crusty, and pus will seep out. read more

Your dog may be chewing his nails because the nail bed has a fungal infection. It might also be a result of injuring a nail. An exposed and untreated wound may lead to infection and make your dog itch. Check to see if his nails are red, swollen or sensitive to touch. read more