Nick Garbutt / Bornean angle-headed lizard (Gonocephalus bornensis) with mouth open in forest habitat, Danum Valley, Sabah, Borneo, Malaysia

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

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

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

Chien Lee / Bornean Crested Lizard (Gonocephalus grandis) female, Gunung Gading National Park, Malaysia

Thomas Marent / Bornean Crested Lizard (Gonocephalus grandis) young, Forest Research Institute Malaysia, Malaysia

Tim Laman / Head portrait of Bornean angle-headed lizard (Gonocephalus bornensis) on a tree trunk in lowland rainforest (endemic to Borneo) Danum Valley Conservation Area, Sabah, Malaysia.

Tim Laman / Bornean angle-headed lizard (Gonocephalus bornensis) on a tree trunk in lowland rainforest (endemic to Borneo) Danum Valley Conservation Area, Sabah, Malaysia.

Albert Lleal / Bornean Crested Lizard (Gonocephalus grandis) eye, native to Borneo

Albert Lleal / Bornean Crested Lizard (Gonocephalus grandis), native to Borneo

Nick Garbutt / Bornean angle-headed lizard (Gonocephalus bornensis) in rainforest habitat, Danum Valley, Sabah, Borneo, Malaysia