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Old Comments:

2011-01-09 10:04:39
Yes, you're right, although the Mexican Beaded lizard and the Gila are very closely related, what a biologist might call 'congeners.' Both are members of the genus Helodermatidae, which means 'nail skin' as their scales give the apperance of nail or brad heads, or beads. Gilas are Heloderma suspectum, the Mexican Beaded are Heloderma horridum, and they are physically almost identical, except that Gilas' tails tend to be shorter and fatter than the tails of Beadeds. And yes, both are poisonous, though Arizona Al has grossly exaggerated both the risk and the effects of the venom. In fact, Gilas and Beadeds are rather sluggish and non-aggressive, and their bites, though painful, are very rarely fatal.
2011-01-09 08:08:49
Don't forget about the Beaded lizard which lives in Mexico
2011-01-05 11:44:34
That's right, Teluride. Tourists and hikers in the parts of the country where these things live should exercise extreme caution, and especially so in Arizona, where the largest and most aggressive ones are found. Gilas like to flatten themselves on rocky ledges, wait for their prey to pass below, then leap upon the unsuspecting victim. Campers should also be careful to securely zip up their tents as Gilas have been known to crawl into sleeping bags at night seeking warmth. If bitten there is little hope of survival. Most victims go into convulsions within minutes and death soon follows. Frankly, if I were you, I'd just avoid traveling in Arizona for any reason at all.
2011-01-05 11:21:18
Gila Monster is the common nme for the Gila Lizard ( Gila is pronounced 'Heela ') , North Americas only venomous lizard. They live in the deserts of the Southwestern U.S. and Northern Mexico, and can grow up to two feet in length.