Disclosed is a rotary brush for use in grooming a pet, such as a dog or cat. The brush includes a handle to which a head is rotatably mounted. The head preferably includes a series of channels that accepted elongated rows of tines. The tines can be formed in any of a variety of shapes or arrangements to facilitate proper grooming. A skin guard can also be included to prevent the tines from damaging the pet's skin. An accumulator is secured to the handle and is interdigitated with the series of upstanding tines. In this manner, the accumulator collects hair gathered by the tines.