The largest lizard known in the wadis of this region is the Oman
lizard (Lacerta jayakari ). Blue-grey and brown in colour,
it can reach a length of 60 cms, two-thirds consisting of the
long thin tail. It is active in the middle of the day in the hot
months of the year, although it stays in the shade and close to
water. It is possible that it hibernates in the winter months,
as it is rarely seen during that time.
Smaller in size than the Oman lizard is the blue headed agama
(Pseudotrapelus sinaitus ). Frequently found in the wadis
of the UAE, it is, in typical agama fashion, less shy than most
other reptiles and allows relatively close approach. Only about
18 cms in length it preys mainly on small insects. The male is
very noticeable, as its head and upper body turn a bright blue,
when it is sexually aroused or angry.