Aquatic Coral Snake 
Aquatic Garter Snake 
Arabian chameleon 
Arabian cobra 
Arabian horned viper 
Argentine Black and White Tegu 
Argentine Red Tegu 
Arizona Black Rattlesnake 
Armored Pricklenape 
Arnold's Fringe-fingered Lizard 
Ashy gecko 
Asian Bockadam 
Asian House Gecko 
Asp Viper 
Atlantic lizard 
Australian water dragon 
Awl-headed Snake 
Baja California Brush Lizard 
Baja California Collared Lizard 
Bale two-horned chameleon 
Balkan green lizard 
Balkan wall lizard 
Balkan whip snake 
Ball python