Secret Toad-headed Agama Phrynocephalus mystaceus

Secret Toad-headed Agama
Secret Toadhead Agama
Secret Toad-headed Agama
The Secret Toad-headed Agama, also called Secret Toadhead Agama, is native to the desert and steppe of Central Asia. It is one of several species of Toadhead Agama.
Secret Toad-headed Agama
Secret Toadhead Agama
These photos immediately above and all below were taken in Kazakhstan by Alexandra Makhnina (who got better photos of them than I did).
Secret Toad-headed Agama
Secret Toadhead Agama
Secret Toad-headed Agama
The fingers and toes are fringed to help running on sand.
Secret Toad-headed Agama
Secret Toadhead Agama
Secret Toad-headed Agama
Neither Sasha nor I managed to photograph the "secret" -- when it fully opens its enormous pink mouth with frilled side wings.