Cats Eyes Dilated All The Time. I had not thought much about it because it has been very gradual, but the last time i was at the vet they asked me about her eyes. When frisky is very playful or feeling stressed, her pupils can become very large to reflect her feelings.
She's only done that a few times. My 16 year old siamese mix started acting weird a couple of months ago. I shown a lamp in its face and no reaction almost.
Today, while i was walking my dog;
I don't know the maximum, but i'll use some of my cats as an example. My 16 year old siamese mix started acting weird a couple of months ago. She's only done that a few times. If your house is dark at all, or dim, a cats eyes would normally dilate, they need to draw in what light they can, that is why they can see in really dim situations.