*In severe cases, dyspnoea and tachypnoea may be observed
*In severe cases, dyspnoea and tachypnoea may be observed
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*'''Sudden-onset dyspnoea''' and collapse may occur in animals with [[Lungs Circulatory - Pathology#Embolism, thrombosis and infarction|pulmonary thromboembolism]]
+
*'''Sudden-onset dyspnoea''' and collapse may occur in animals with [[Pulmonary Embolism, Thrombosis and Infarction|pulmonary thromboembolism]]