What is indicated by dilated pupils in pets?

Dilated pupils in pets are often a physiological response associated with fear or stress. When an animal perceives a threat or is experiencing anxiety, its body enters a state of heightened arousal, which can lead to the dilation of pupils. This response is part of the "fight or flight" mechanism whereby the animal's body prepares to either confront the threat or escape from it.

This physiological change allows more light to enter the eyes, which can enhance visual perception in low-light conditions, thus preparing the animal for a potential need to react to a danger. Understanding this sign is essential for veterinary professionals and pet owners alike, as recognizing when a pet is fearful or stressed can help in providing appropriate support and interventions to alleviate their anxiety.