Mouth. Statue at Buddha Park, near Vientiane, Laos In animal anatomy, the mouth is the opening through which many animals take in food and issue vocal sounds.
It is also the cavity lying at the upper end of the alimentary canal, bounded on the outside by the lips and inside by the pharynx and containing in higher vertebrates the tongue and teeth.[1] This cavity is also known as the buccal cavity derived from the Latin bucca meaning a "cheek".[2] Some animal phyla, including vertebrates, have a complete digestive system, with a mouth at one end and an anus at the other.
Teeth. Mouth.