Himalayan Cat Pupils Always Dilated. If the cat has dilated pupils and their eyes wide open it is a clear sign of fear. However, if your cat’s pupils are dilated because of stress or discomfort, the situation should be assessed.
Although some of the causes that explain why a cat has round pupils are positive, it is important to note that this is sometimes not healthy. Healthy eye dilation in cats happens when their pupils naturally grow larger in dim light or darkness and become narrower in bright environments. Light enters a cats eyes through the pupils.