Whilst birdwatching the An Namas area of the Asir Mountains, 150 kms north of Abha, I came across a Yemen Rock AgamaAcanthocercus yemensis.
The Yemen Rock Agama occurs in northern Yemen and adjacent Saudi Arabia, but the limits of its distribution in Saudi Arabia are currently not well known, although I have seen it as far north as Bani Saad. It occurs from around 2,000 to 3,000 metres above sea level mainly in rocky habitats.
They occur both on the ground and climbing rocky surfaces, including stone-walls and human habitations where they are sometimes common. The Agama below is missing part of its tail.