Giant compound hair follicles
Normally, these tufts are found around the rabbit's cheek and jaw area.
"As the hair shafts reach the surface the compound follicle is subdivided by fibrous septa into smaller groups which surround the large outer-coat hair. Each of these smaller groups of undercoat hairs penetrate the skin through a common follicle opening, whereas the outercoat hair has a separate opening."
- H. J. Whiteley (1958). Giant Compound Hair Follicles in the Skin of the Rabbit.