A 13-year old neutered male DSH cat presents with inspiratory dyspnoea, frequent sneezing, congestion, weight loss and partial anorexia of three months’ duration. Physical examination reveals bilateral mucopurulent nasal discharge. Amoxicillin/clavulanic acid has been administered unsuccessfully. Vaccinations are up-to-date and the cat is free roaming. A smear is prepared from a nasal flush (Wright’s, ×40). Cranial radiographs do not reveal any osteolytic lesions or evidence of a mass.
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You are asked to examine a 10- day-old Coldblood filly. When sucking from the dam, the filly constantly loses milk through both nostrils. The foal appears otherwise to be clinically normal.