A collar that provides a restraint for dogs or other animals from biting the veterinarian or pet groomer when the animal is being examined, treated or groomed. The collar is formed from a rigid yet flexible foam sheet of polyethylene with a recessed portion on one edge that receives the underside of the dog's chin for proper positioning and comfort as it encircles the dog's neck. A fastener at the ends of the foam sheet adjusts the collar to fit the dog's neck and also provides an easy way to attach and remove the collar from around the dog's neck.