What is primarily assessed first during the triage of an injured pet?

During the triage of an injured pet, the primary focus is on assessing the respiratory and cardiovascular systems. This approach aligns with the principles of triage, which prioritize the stabilization of life-threatening conditions. The respiratory system is crucial because any compromise can lead to hypoxia and rapid deterioration of the patient's condition. Similarly, the cardiovascular system assessment is vital to ensure there is adequate blood circulation and perfusion of organs. Abnormalities in these systems can indicate critical situations that require immediate intervention, such as administering oxygen or fluids.

Other assessments, such as evaluating wounds, urine production, or blood glucose levels, are important but are secondary to ensuring the animal's basic life-support systems are functioning properly. Addressing these vital signs first allows for prompt treatment that can significantly influence the outcome for the injured pet.