A custom fittable collar for an animal, useful to prevent the animal from contacting injured areas on the body, thus promoting healing of wounds. The collar comprises opposing sheets of flexible material. The resulting collar is rigid enough to resist deformation thus preventing licking or biting of a wound by the animal, but soft enough that the collar is both comfortable to wear, and less likely to catch on other objects, thus improving the safety and wearability of the collar. The collar further comprises a closure assembly adapted for easy placement or removal of the collar. The collar further comprises stitching that creates fold lines to allow the collar to be conveniently folded.