Gila Monster 
Giri's bronzeback tree snake 
Glaw's Chameleon 
Globe-horned chameleon 
Godman's Montane Pit Viper 
Gold Dust Day Gecko 
Gold tegu 
Gold-Ringed Cat Snake 
Gold-spotted Mabuya 
Golden coin turtle 
Golden Grass Mabuya 
Golden lancehead 
Golden-crowned snake 
Golden-spotted tree monitor 
Goldenscale Anole 
Gopher tortoise 
Graceful chameleon 
Graceful Madagascar Ground Gecko 
Graham's Crayfish Snake 
Gran Canaria giant lizard 
Grandidier's Dwarf Gecko 
Grandidier's Madagascar ground gecko 
Grandidier's Madagascar Swift 
Grandidier's Velvet Gecko