Pupil dilation in frog

[TypingMonkey]

I don't know if this is just my frog or if you guys have experienced it too, but I notice that my albino pacman's pupils get real small in the day when he is staying still, but they get bigger when he is about to eat. I was trying to make sure I wasn't hallucinating but they do get bigger. Does anyone know why this happens if it's normal or something to be concerned about?

[John]

He's most likely sleeping when you see his pupils get very small.

[TypingMonkey]

Ok thanks for the reply. I didn't know if he was sleeping or not because I heard that they sleep with their eyes closed. But I think you are right because light doesn't seem to make them smaller they actually get bigger when the light comes on, that's when I feed it so... Am I the only that gets this though or anybody else get this also?

[John]

I didn't know if he was sleeping or not because I heard that they sleep with their eyes closed.

Some frogs close their eyes to sleep - African Bullfrogs for example. Some don't - I've noticed my Gray Tree Frogs and Horned/Pacman Frogs don't close their eyes to sleep, they just shrink their pupils.