In which part of the mouth are there no three-rooted teeth in dogs and cats?

The mandible, or lower jaw, of dogs and cats does not contain any three-rooted teeth. In these animals, the maxilla, or upper jaw, has the possibility of three-rooted teeth, specifically the maxillary fourth premolar. This anatomical feature is important for understanding dental structure in small animals.

The presence of three-rooted teeth in the maxilla allows for greater stability and anchorage of these larger teeth that are used for shearing food. In contrast, the mandible does not have this same anatomical arrangement; the teeth in the mandible typically have either one or two roots, which is sufficient for their functional role in the animal's oral health and feeding behavior. Recognizing the unique dental structures in different parts of an animal’s mouth can aid in diagnosing and treating dental issues effectively.