Iguanas have a nasty bite and can be quite aggressive, especially the males. Captive breed tokays have a tendency to be very tame and handable, unlike their wild-caught brethren. Kevin McCurley (N.E.R.D./Zoo Creatures) breeds high end tokays. I especially love his "powder blue" ones. I also love Phelsuma madagascariensis, P. cepediana, and Lygodactylus williamsi.