Mexican beaded lizard (Heloderma horridum) - The beaded lizard of Mexico is the larger of the two species of venomous lizards. These lizards have large grooved teeth in the lower jaw and when threatened they lash out and grip the attacker like a vise, pumping venom into it. Their large tails are used to store fat, which helps them through periods of low food availability.

 

 

 

 

 

 

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