Newt
During the subsequent few months, the larvae undergo metamorphosis, during which they develop legs, and the gills are absorbed and replaced by air-breathing lungs. Some species, such as the North American newts, also become more brightly coloured during this phase. Once fully metamorphosised, they leave the water and live a terrestrial life, when they are known as "efts". Only when the eft reaches adulthood will the North American species return to live in water, rarely venturing back onto the land. Conversely, most European species live their adult lives on land and only visit water to breed.
Ned's Newt
The series begins with Ned finally scraping up enough money to buy a pet. However, upon reaching the pet store, the only thing he can actually afford is a newt. Dubbing his new pet "Newton", Ned quickly tires of it, since Newton just lies on the rock in his bowl. Complaining to the pet store owner that his new pet is not very active, the owner gives Ned a can of "Zippo for Newt" pet food but warns Ned not to give his pet too much. Ned feeds Newton a little, but Newton does nothing. Ned leaves the can beside Newton's bowl and goes to bed.