A 12.5-year-old sexually intact male Prevost's squirrel (Callosciurus prevostii) was evaluated because of rightsided facial swelling and a recent history of dysphagia and stridor. The squirrel was anesthetized to allow for physical examination and collection of blood samples. Physical examination revealed a fracture of the maxillary right third premolar tooth and an associated abscess. Results of hematologic and serum biochemical testing were within reference limits for this species. While the squirrel was anesthetized, radiographs of the skull were obtained (Figure 1).
Dorsoventral (A) and right lateral (B) radiographic views
An 11-year-old 45-kg (99-lb) castrated male sheep (Ovis aries) of the Jacob breed was evaluated because of a 2.5-month history of recurrent nasal discharge and increased respiratory effort.
Clinical and Gross Findings
Initial examination of the sheep revealed wheezing with stertorous inspiration; respiratory rate was 36 breaths/min. Heart rate was 120 beats/min, and rectal temperature was 39.6°C (103.3°F). Results of a CBC and serum biochemical analysis were unremarkable. Repeated examinations throughout the following month revealed increased lung sounds in the right pulmonary fields, decrease in appetite, and decreased body condition, compared with the initial examination findings. Right-sided