Which of the following is NOT a sign of dehydration?

When evaluating signs of dehydration in pets, it's essential to recognize the physiological indicators that reflect a lack of adequate fluid levels in the body. Dry mucous membranes, reduced jugular distension, and tachycardia are all classic signs associated with dehydration.

Dry mucous membranes indicate insufficient moisture in the mouth and other tissues, which often results from decreased fluid intake or increased fluid loss. Reduced jugular distension occurs because dehydration leads to lower blood volume, making it harder for the veins to distend. Tachycardia, or an increased heart rate, is a compensatory response to maintain blood circulation when fluid volume is low.

In contrast, otitis externa is a medical condition that refers specifically to the inflammation of the outer ear canal. While ear infections can occur for various reasons, they do not directly indicate dehydration. Therefore, it does not belong in the list of signs for dehydration. Understanding these distinctions is vital for recognizing and addressing the symptoms of dehydration in veterinary practice.