Boyd's Rainforest Dragon (species: Hypsilurus boydii) in Yungaburra, QLD (Gaia Guide)
Hypsilurus boydii
Boyd's Rainforest Dragon

©Greg Schechter: Boyd's Rainforest Dragon (Hypsilurus boydii)
Kingdom Animalia
Phylum Chordata
Class Reptilia
Order Squamata
Family Agamidae
Genus Hypsilurus
Species Hypsilurus boydii

Distinguishing features

Mature specimens are generally brown or grey above, with some having a green flush. The body is laterally compressed. They have very enlarged cheek scales, a prominent nuchal crest, and a yellow dewlap under the chin edged with enlarged spines. The tympanum is large and superficial. A dorsal crest, discontinuous with the nuchal crest, consisting of enlarged, hardened and pointed scales, runs down to the base of the tail.

Adults are sexually dimorphic, with males being larger than females and having larger, blockier heads. (Wikipedia)


  • Up to 49 cm (Total length including tail) - applies to Males
  • Up to 42 cm (Total length including tail) - applies to Females



©Atlas of Living Australia: Australian distribution

Distribution and habitat preferences

It is found in rainforests of the Wet Tropics region of northern Queensland, Australia. The species is restricted to rainforests and their margins in northern Queensland, Australia, from just north of Townsville to near Cooktown. It is found in both upland and lowland rainforest, and is often seen around Lake Eacham and Lake Barrine, and can also be seen in parts of Malanda Falls Conservation Park and at Mossman Gorge. (Wikipedia)


It spends the majority of its time perched on the trunks of trees, usually at around head height. (Wikipedia)


They are sit-and-wait predators, catching prey that they spy from their perches, although once on the ground, they will frequently move over a wider area, catching prey as they go. Their diet consists primarily of invertebrates, with earthworms making up a relatively high proportion. Small fruits and vertebrates are also occasionally consumed. (Wikipedia)

Web resources