Secret Toad-headed Agama Phrynocephalus mystaceus

Secret Toad-headed Agama
Secret Toadhead 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.
These photos were taken in Kazakhstan by Alexandra Makhnina (who got better photos of it 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. Neither Sasha nor I managed to photograph the "secret" -- when it opens its enormous pink mouth with frilled side wings.