Young dog; normal healthy gingiva.

Rabbit; normal gingiva.

Cat; normal gingiva.

Same cat as above; gingival inflammation and periodontal disease associated with abnormal teeth. 

Young cat; gingival inflammation (gingivitis).

2 yr dog, gingivitis after orthodontic therapy.

Young cat; gingival enlargement.

5 yr dog; gingival enlargement.

Same dog as in above photo; gingival enlargement.

Benign gingival enlargement confirmed as hyperplasia by a pathologist.

Malignant gingival tumor determined to be squamous cell carcinoma by a veterinary pathologist.

Cat; 4 mm periodontal pocket with inflamed gingiva.

Dog; severe 9 mm periodontal defect with gingiva, alveolar bone and periodontal ligament missing.  Root cementum exposed.

Young cat; severe 3 mm periodontal defect with gingiva, alveolar bone and periodontal ligament missing.

Root cementum exposed.  This defect was created by traumatic occlusion of the upper fourth premolar.

Young dog; traumatic gingival defect.  The upper canine was luxated and the gingiva was torn.