Every now and than i will see Ceasar running accross the cage or jumping up to get to a bug. Household flies or spiders mostly. Not in abundance but here and there. Usually by the time i get over there to try and shoo the pest away he has been consumed by my savage dragon. (hes actually a complete heartbreaker). So i was curious as to if they are dagnerous. i know that they can carry outside diseases but as long as its not alot being consumed is it ok? there not much i can do. the lights attract the flies. I dont get many but he does a good job at getting rid of them.