Boxers with white markings covering more than one-third of their coat – conventionally called “white” Boxers – are neither albino nor rare; approximately 20–25% of all Boxers born are white.
Genetically, these dogs are either fawn or brindle, with excessive white markings overlying the base coat color. Like fair-skinned humans, white Boxers have a higher risk of sunburn and associated skin cancers than colored Boxers.
The extreme piebald gene, which is responsible for white markings in Boxers, is linked to congenital sensorineural deafness in dogs. It is estimated that about 18% of white Boxers are deaf in one or both ears, though Boxer rescue organizations see about double that number. In the past, breeders often euthanized white puppies at birth; today, most breeders place white puppies in pet homes with spay/neuter agreements.
White Boxers are disqualified from conformation showing by the breed standard, and are prohibited from breeding by every national Boxer club in the world. They can compete in non-conformation events such as obedience and agility, and like their colored counterparts do quite well as service and therapy dogs.