Alex Hyde / Bornean angle-headed lizard / Long-crested forest dragon (Gonocephalus bornensis) juvenile climbing liana vine in tropical rainforest. Danum Valley, Sabah, Borneo.

Chien Lee / Bornean Crested Lizard (Gonocephalus grandis) male sleeping at night on an exposed branch, Tibu, Batang Ai National Park, Malaysia

Michael D. Kern / Angle headed lizard (Gonocephalus doriae) captive, occurs in Indonesia, Malaysia, Thailand.

Dong Lei / Emma Gray's Forest Lizard (Calotes emma) in threat display, Xishuangbanna National Nature Reserve, Yunnan Province, China, March.

Chien Lee / Borneo Anglehead Lizard (Gonocephalus bornensis) at night, Gunung Penrissen, Borneo, Malaysia

Chris Mattison / Borneo Dragon (Gonocephalus borneensis). Danum Valley, Sabah, Borneo.

Sebastian Kennerknecht / Borneo Anglehead Lizard (Gonocephalus bornensis) male on tree, Tawau Hills Park, Sabah, Borneo, Malaysia

Nick Garbutt / Comb crested dragon (Gonocephalus liogaster) male in breeding colours and in aggressive posture. Understorey of lowland rainforest, Maliau Basin, Sabah's 'Lost World', Borneo

Suzi Eszterhas / Borneo Anglehead Lizard (Gonocephalus bornensis), Danum Valley Conservation Area, Malaysia

Christian Ziegler / Borneo Anglehead Lizard (Gonocephalus bornensis) in defensive posture, Lambir Hills National Park, Sarawak, Malaysia

Christian Ziegler / Borneo Anglehead Lizard (Gonocephalus bornensis), Lambir Hills National Park, Sarawak, Malaysia

Chien Lee / Bornean Crested Lizard (Gonocephalus grandis) male, Gunung Mulu National Park, Sarawak, Borneo, Malaysia