Gecko (creature)

Geckoes are a common critter in Fallout 2. They appear in several forms:

Little geckoes:
The little/normal Geckoes are the easiest of them to kill. They appear quite early in the game. (already in the Fallout 2 Quest - Rescue Smoke, where they roam the Arroyo Hunting Grounds) They can be skinned, if you have the Gecko Skinning perk.

Golden geckoes:
This is the more beautiful, but also more deadly kind. As stated by Smiley, the Trapper from the Quest Rescue Smiley the Trapper, they can be found near toxic waste, which they seem to lick up. Though it's not said explicitly, obviously there seems to be a connection between the toxic/radioactive waste and the golden Geckos. It can be assumed that exposure to some kind of toxic/radioactive material turns a normal Gecko into a golden one. They can be skinned, if you have the Gecko Skinning perk.

Fire geckoes:
The most deadly kind of Geckoes, they appear mostly in late game and as indicated by their name, can breathe fire. Those things are quite hard to kill and as opposed to both other forms can not be skinned.

Gekon Геккон