Final answer:
An eft is the juvenile stage of a newt. Newts are salamanders that keep their tails and have short legs for walking and swimming, differing from the tailless adult stages of frogs and toads.
Step-by-step explanation:
An eft is the juvenile terrestrial stage of the amphibian known as a newt. Unlike frogs and toads, newts and other salamanders retain their tails into adulthood and have bodies with short legs that are adapted for both walking and swimming. Frogs and toads are members of the same amphibian order and share common traits, but their life cycle involves a larval stage known as a tadpole, which undergoes metamorphosis to become an adult frog or toad, losing its tail in the process.