In felines, what are the maxillary and mandibular 04s referred to?

The maxillary and mandibular 04s in felines refer to the upper and lower premolars. In dental terminology, specifically for dogs and cats, the numeration system designates the upper right quadrant as 100s, upper left as 200s, lower left as 300s, and lower right as 400s. Therefore, "04" specifically indicates the first premolar in each dental quadrant.

Felines have two sets of premolars in each quadrant: one designated as "03" which is the second premolar and "04" which is the first premolar, hence making them the correct identification for what is being described in the question. Understanding this terminology is crucial for proper identification and communication regarding dental health issues in cats, such as extractions or treatments involving specific teeth.