General objective of this lecture is to present on Teeth. There are 4 different types of tooth- incisors, canines, premolars and molars. These different teeth have different jobs. Incisors are cutting teeth used for cutting and biting off pieces of food. Canines are long and sharp teeth that are used to hold and tear at food. Premolars teeth are used to crush and grind soft food. Molars teeth are used for chewing and grinding hard food. Different animals have different sets of teeth depending on the type of food that they eat.