Objective: The escalating prevalence of canine oral tumors has emerged as a considerable health concern. This study examined the prevalence, types, and distributions of lesions linked to canine oral tumors. Material and Methods: The medical records of 526 dogs diagnosed with oral tumors were analyzed to determine the prevalence, types, and distributions. Tumor stages were classified into four categories using the tumor node metastasis system. Results: Among the 526 dogs, there were 118 cases of benign tumors and 408 cases of malignant tumors. Acanthomatous ameloblastoma was the most common benign tumor (43.22%), while melanoma was the most common malignant tumor (51.23%). The gingiva was the most common site for both benign and malignant lesions, accounting for 89.83% and 63.73% of cases, respectively. Melanoma, squamous cell carcinoma, and fibrosarcoma were primarily located in the gin¬giva, whereas osteosarcoma was commonly found in the mandible. Most tumors were classified as stage III (ranging from 46.84% to 74.58%). Of the reported cases, 56.08% were males and 43.92% were females, and the most common breed was mixed at 30.41%, followed by Poodle at 14.25% and Shih Tzu at 11.40%. Moreover, patients with malignant oral tumors (11.6 ± 3.1 years) were significantly older than those with benign tumors (8.9 ± 3.4 years, p < 0.0001). Conclusion: Gingiva was the primary site for oral tumors, and mainly classified as stage III. These findings emphasize the increasing occurrence of oral tumors in senior and geriatric dogs and provide insights into the prevalent types and distribution.

This retrospective study evaluated 92 feline oral neoplasms diagnosed in Thailand to characterize neoplasm types, anatomical distribution, and clinically relevant associations. Epithelial neoplasms accounted for 73% of all neoplasms, with squamous cell carcinoma being the most common (67%). Other epithelial neoplasms such as ameloblastoma, amelanotic melanoma, and adenocarcinoma were uncommon. Mesenchymal neoplasms (27%) were more heterogeneous, encompassing fibrosarcoma, osteosarcoma, lymphoma, plasma cell tumors, and several rare entities. Cats with epithelial neoplasms were significantly older than those with mesenchymal neoplasms (11.0 ± 3.8 vs. 6.8 ± 4.1 years old; p < 0.001), while body weight, sex, clinical stage, and perioperative mortality did not differ between neoplasm types. Breed distribution varied by neoplasm origin, with epithelial neoplasms more common in domestic shorthair cats, and the maxillary gingiva was the most frequently affected site. Neoplasm size strongly correlated with disease stage, as neoplasms > 2 cm were associated with advanced stages, while neoplasms ≤ 2 cm were typically stage I. Antibiotic use was significantly more frequent in senior cats compared to mature/adult cats (p = 0.014). In summary, SCC is the most common oral tumor in cats, indicating the importance of routine oral examinations, particularly in senior cats.

Tooth resorption (TR) is a common and painful dental disease in cats. The contributions of skull type, diet, and chronic gingivostomatitis (CGS) to its development remain unclear. We retrospectively reviewed 166 cats with TR confirmed radiographically to evaluate these associations. Brachycephalic cats (N = 33) were significantly younger than non-brachycephalic cats (7.1 ± 2.6 vs. 8.7 ± 3.8 years, p = 0.026) and had a higher prevalence of advanced Stage 4 TR lesions (p = 0.018). There was no significant difference between two groups of cats in sex distribution, diet type or wet food consumption. CGS occurred more often in non-brachycephalic cats (57.9% vs. 21.2%, p < 0.001) but was not associated with TR severity. In both skull groups, mandibular premolars and molars were most commonly affected (p < 0.01). Cats with owner-reported premium diets had more Stage 4 lesions (p = 0.013), particularly in non-brachycephalic cats but not in brachycephalic cats. These findings suggest that TR severity is associated with younger age and advanced lesions in brachycephalic breeds, as well as diet-related differences in non-brachycephalic cats. Further studies are warranted to evaluate early dental screening and targeted nutritional strategies to mitigate the progression of tooth resorption in cats.