Puft is one of the less common, non-aggressive creatures. A chubby being, which flies and rises in random directions. It has an extraordinary metabolism, as it inhales contaminated oxygen and produces Slime after some time. It occurs most often in caves with contaminated water and oxygen and some amount of pure oxygen; usually in the toxic biome. On some maps, a very small number of these animals is generated. They are also vulnerable to high temperatures, which can prove to be fatal.