Gecko

Geckos are a well adapted group of reptiles; you can find in almost every house, unlike the small lizards, geckos have 'hands' adapted to climb, that 'glue' on the walls, giving the animal great mobility. These reptiles are famous pets around the world due their amazing colors.

Biome/Spawn
There are 3 species of geckos: Giant Day Gecko (Phelsuma grandis) are fairy common and spawn on Forests. They are quite large geckos and can reach 30 cm of lenght.

Leopard Tangerine Gecko (Eublepharis macularius) are uncommon and spawn on Mesa biome. They can reach 25 cm.

Tokai Gecko (Gecko gecko) are fairy common on Jungle Hills, its a large gecko; can reach 35 cm.

Behavior
Geckos will attack beetles and small spiders, but will be Passive to other mobs or the player. They are very fast and when on panick will flee like a flash, the player can lure them with spider eyes. They almost never drop items but at rare times they will drop 1 Slime Ball.

Breeding
Yes; Spider Eye.