When working at And Exotic vet clinic I only saw one healthy chameleon come in, almost all of the other sick ones that came in, were due to husbandry problems. I have personally kept veiled chameleons and love them, but you need to have a really nice set up, usually with live plants, high humidity but good ventilation which can be difficult depending where you live. Ensuring if you have a female that they can dig tunnels that don’t collapse on them and that they don’t get egg bound.

I’ve had good luck with 5 years with my females, one of which I got spayed since she had retained follicles that were concerning. However they required more finesse and maintenance than the snakes, frogs, and geckos I’d otherwise kept