Aspidoscelis tigris Tiger Whiptail
Some other names for this species:
Western Whiptail
This species was placed in the genus Cnemidophorus until recently, so many reference books use that name.
Subspecies I've seen:
A. t. munda
California Whiptail
A. t. punctilinealis
Sonoran Tiger Whiptail
A. t. septentrionalis
Plateau Tiger Whiptail
A. t. tigris
Great Basin Whiptail
Aspidoscelis tigris munda California Whiptail
Pine Ridge Trail, Ventana Wilderness, Monterey County, CaliforniaAugust 23, 1998
California Whiptail (Aspidoscelis tigris munda)
This one is medium sized, probably a young adult. Its regenerated tail is not so whiplike as it once was.
Garland Ranch Regional Park, Monterey County, CaliforniaJanuary 17, 1999
California Whiptail (Aspidoscelis tigris munda)
This one is a juvenile; you can tell by its disproportionately larger head and shorter snout. It must have been injured, possibly stepped on, because it was writhing about when we came upon it. I picked it up and it seemed to enjoy basking in the warmth of my palm on this cool winter day. It seemed to recover well from its earlier trauma and I didn't see any injuries so I'm hopeful that it will grow up to be a big whiptail someday.
Desert Tortoise Natural Area, Kern County, CaliforniaApril 22, 2000
California Whiptail (Aspidoscelis tigris munda)
This attractively marked one was playing the usual whiptail tease-the-photographer game which consists of resting briefly until the shutter is almost clicked, then racing off to another bush. I must have tired it out though because it finally stopped for long enough to take a couple of photos.
Pinnacles National Park, San Benito County, CaliforniaJuly 3, 2011
California Whiptail (Aspidoscelis tigris munda)
The whiptails were busily bustling about on this hot morning. Most of them raced away in the nervous twitchy manner of whiptails everywhere, but this one paused on the trail in front of me for a little basking.
Pinnacles National Park, San Benito County, CaliforniaJune 2, 2016
California Whiptail (Aspidoscelis tigris munda)
I watched this large whiptail poke around between the pictured rock and dead branch, repeatedly pulling out some sort of yummy whiptail snack. My guess is that the snacks were winged termites, but I'm not sure.
Aspidoscelis tigris punctilinealis Sonoran Tiger Whiptail
near Signal Hill Trail, Saguaro National Park West, Pima County, ArizonaApril 10, 1999
Sonoran Tiger Whiptail (Aspidoscelis tigris punctilinealis)
Tucson was recovering from a cold spell on this day, so there were relatively few lizards skittering about. If there were more, I'm sure I would have gotten a better picture (yeah, right).
near Quitobaquito Spring, Organ Pipe National Monument, Pima County, ArizonaMay 27, 2001
Sonoran Tiger Whiptail (Aspidoscelis tigris punctilinealis)
My friend David Sloo and I watched this whiptail nervously excavate some sort of crunchy wiggling morsel. The lizard looked like a dog digging a hole in beach sand.
near Ajo, Pima County, ArizonaAugust 14, 2013
Sonoran Tiger Whiptail (Aspidoscelis tigris punctilinealis)
While unsuccessfully looking for horned lizards early in the morning, I did manage to find a few wary whiptails.
Mohawk Dunes, Yuma County, ArizonaMay 21, 2015
Sonoran Tiger Whiptail (Aspidoscelis tigris punctilinealis)
Ditto, except in this case I was successfully looking for horned lizards.
Aspidoscelis tigris septentrionalis Plateau Tiger Whiptail
Dead Horse Point State Park, Wayne County, UtahJune 19, 2001
Plateau Tiger Whiptail (Aspidoscelis tigris septentrionalis)
Another rare resting whiptail. This same morning, I saw another whiptail two feet up in a bush foraging for bugs. I had never seen one climbing so high off the ground before.
Sedona, Coconino County, ArizonaAugust 13, 2004
Plateau Tiger Whiptail (Aspidoscelis tigris septentrionalis)
On a relatively cool day, this whiptail had just crawled out of a burrow a few inches away and was warming up for its afternoon forage.
Virgin River Recreation Area, Mohave County, ArizonaApril 28, 2006
Plateau Tiger Whiptail (Aspidoscelis tigris septentrionalis)
Considering the time (around 10:30 AM, plenty late enough for the whiptails to be warmed up and feisty), this lizard was remarkably polite to let me approach close enough for this photo.
Natural Bridges National Monument, San Juan County, UtahJune 2, 2006
Plateau Tiger Whiptail (Aspidoscelis tigris septentrionalis)
I'm pretty sure that this is the closest any whiptail has ever let me approach for a photograph. It was early enough in the morning that the whiptails were just starting to bask. I didn't think the "good lizards" would be up yet, so I hadn't brought my trusty 200mm macro lens with me, but I had brought along a wide-angle lens for some photos of the scenic beauty. After this fellow started sunbathing near me, my wife, and the various dogs we had brought along, I just kept inching closer and closer to it until I could get this photo from no more than a foot away. I guess I'll have to stop bad-mouthing whiptail lizards if they're going to be this cooperative.
Goblin Valley State Park, Emery County, UtahJuly 19, 2017
Plateau Tiger Whiptail (Aspidoscelis tigris septentrionalis)
I followed this attractively patterned whiptail lizard around as it inspected every clump of grass and rodent hole in the vicinity. What it did not do is stop moving so I could get a decent photo.
Aspidoscelis tigris tigris Great Basin Whiptail
Mara Oasis, Joshua Tree National Park, San Bernardino County, CaliforniaJune 20, 1998
Great Basin Whiptail (Aspidoscelis tigris tigris)
You have to follow a lot of whiptails for a long time before one of them will stop twitching long enough for you to take a decent picture. This one was climbing in some low branches and so couldn't race off as fast as most.
Borrego Palm Canyon, Anza-Borrego Desert State Park, San Diego County, CaliforniaApril 24, 2009
Great Basin Whiptail (Aspidoscelis tigris tigris) Great Basin Whiptail (Aspidoscelis tigris tigris)
When I first saw the two whiptails pictured in the top photo, one of them seemed to be chasing the other. I thought they might be a courting pair, and perhaps they were. But after a minute or two, they ended up in the same bush, digging at the same spot, apparently foraging together.

The unusually non-cameraphobic whiptail in the second photo was about to endure the scare of its life. Shortly after the full-body basking shown here, it jittered its way into a leafy bush about six feet ahead of us on the trail and momentarily disappeared. A fraction of a second later it was back in the middle of the trail, and so was the huge coachwhip that had essentially flown out of said bush in hot pursuit. I've never seen two herps move that fast -- one instant, empty trail; the next instant, whiptail and large hungry snake hit the trail simultaneously. The whiptail zipped past us down the hill. The coachwhip saw us and decided that we looked more frightening than the whiptail looked tasty, so quickly fled into the nearest cover. I didn't have nearly enough time to take a photo, but the image of that surprised whiptail and lightning-fast predator will be burned into my brain for some time to come.

Borrego Palm Canyon, Anza-Borrego Desert State Park, San Diego County, CaliforniaMay 23, 2015
Great Basin Whiptail (Aspidoscelis tigris tigris)
Not a particularly good whiptail picture, but the best one I managed to take this morning. Those darn whiptails!
SARA Mountain Park, Lake Havasu City, Mohave County, ArizonaApril 14, 2016
Great Basin Whiptail (Aspidoscelis tigris tigris)
Since I was mostly dog-walking and only incidentally herping, I had neglected to bring any lens longer than 100mm, so I had (and consequently you have) to settle for this medium-distance shot. It did not stick around for its close-up.
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