The last several caudal vertebra are fused and hardened, forming a spike, used for defense.
Skin color is sometimes blotched or speckled.
The fetches are skilled jumpers.
All fetches are flightless, though some arboreal fetches show inter-limb webbing. Vestigial wing bones are present, though they are quite small and completely internalized.
The cheek area is covered by a plate. This plate can be lifted away from the head and flared, allowing brightly colored membranes to show. The plate itself can be flushed a contrasting color.
A series of long, flat scales down the spine of the fetch can be raised. They are webbed and colored in a manner similar to the cheek plates.
The bodies are large and flat, with wide heads and stout limbs. Tail shape is affected by phase, as is the placement and coloration of various fins, knobs, horns, and other protuberances. Horns and other decorations are often asymmetrical.
Some species are venomous.
A sack is helpful.