The term CANINE'S NEIGHBOR refers to the four types of teeth found in a dog's mouth. The first type is the MOLAR, which is a large, flat tooth used for grinding food. The second type is the INCISOR, which is a sharp, chisel-shaped tooth used for cutting and biting. The third type is the BICUSPID, which is a tooth with two pointed cusps used for shearing and tearing food. Finally, the fourth type is the PREMOLAR, which is a tooth with one or two cusps used for crushing and grinding food. All four of these teeth are found in a canine's mouth and are essential for proper chewing and digestion.