Respiratory affections are important clinical problems recorded in dogs and cats affecting their
health condition. This study was carried out on a total of 84 animals including 32 dogs and 52
cats of both sexes and different breeds suffering from different respiratory affections including
pneumonia, aspiration pneumonia, Feline upper respiratory diseases(FURD) and Canine
infectious respiratory disease(CIRD). Clinical, hematological, biochemical and radiographic
changes during these affections were evaluated. In addition the most common incriminated
bacteria was isolated and identified. The affected cases showed variable respiratory signs
including dyspnea, nasal and ocular discharge, sneezing, cough, abnormal respiratory sound
and abnormal lung sound. Hematological changes showed inflammatory leukogram
represented by increasing in WBCs and neutrophil count Serum analysis showed marked
increase in CRP, SAA and HP levels, with hyperproteinemia and hypoalbuminemia compared
to reference value. The most common bacteria isolated from pneumonic cases were Klebsiella,
E.coli, Staph., Pseudomonas, Pasteurella, Proteus and Serratia. Radiographic examinations
revealed abnormal radiographic patterns associated with the different affections. The present
study concluded that clinical, hematological, biochemical combined with chest radiographic
findings are essential for precise diagnosis of different respiratory affections in dogs and cats
and the early diagnosis facilitate the prescription of relevant therapy and follow up procedures.