View allAll Photos Tagged lizard
The feature for which this species is not obvious until the tail is raised (which it commonly does when it skedaddles).
IMG_1268e; Zebra-tailed Lizard
© Peter Burke 2013 all rights reserved, Beatty Ranch, CO 6/1/13 - Wikipedia: In some of the Cnemidophorus species, there are no males, and they reproduce through parthenogenesis. This is well known in bees and aphids, but is very rare in vertebrates. Those species without males are now known to originate through hybridization, or interspecific breeding. Occasionally, a mating between a female of one species and a male of another produces a parthenogen, a female that is able to produce viable eggs that are genetically identical to her own cells. The lizards that hatch from these eggs are thus also parthenogens that can again produce identical eggs, resulting in an asexual, clonal population. Parthenogenetic species resulting from a single hybridization are diploid (that is, they have two sets of chromosomes just as sexual species do), but sometimes these females mate with other males, producing offspring which are triploid (that is, they have three sets of chromosomes, or 50% more than equivalent sexual species). Over 30% of the Cnemidophorus genus are parthenogenic.
I think this is a Western Fence Lizard ( Sceloporus occidentalis ) Picture taken in Pagosa Springs, Colorado.
Once again lizards during this year! This time in Kampinos National Park in Poland.
Lizard or lizards? Look at the head.
A Blue Spiny Lizard perches on a wall at Bensten-Rio Grande State Park in Mission, TX. Photographed on 11/6/12.