How many three-rooted teeth are there per side in dogs?

In dogs, there are typically three-rooted teeth located on each side of the mouth, specifically in the upper jaw. The maxillary fourth premolar is the primary tooth that has three roots, which are necessary for the support of the tooth given its size and function in processing food. Each upper fourth premolar on either side of the mouth provides the same structural anatomy, contributing to the total count of three-rooted teeth.

The presence of three roots aids in better stability and anchorage of the tooth in the alveolar bone. This anatomical detail is crucial for dental health and understanding potential areas for periodontal disease or other dental pathologies.

While there are teeth with different root configurations in other quadrants (such as single or double-rooted teeth), the focus on the three-rooted teeth pertains specifically to the upper premolars in small animal dentistry. Thus, the leading detail about the single three-rooted tooth on each side underlines the correct answer regarding their count per side.