A curly haired dog is a dog breed that has a coat of tight, spiraled curls. Examples include the Poodle, Bichon Frise, and the Curly-Coated Retriever.
Curly haired dogs are often hypoallergenic and require less frequent grooming than other breeds. Their tight curls can form mats, requiring regular brushing and occasional trimming. Historically, curly haired dogs were bred for hunting due to their water-resistant coats and keen senses.