The term 'Future Frog' is a combination of two words, 'TADPOLE' and 'POLLIWOG'. Tadpoles are the larval stage of frogs and toads, which have a long, slender body and a tail. Polliwogs, also known as pollywogs, are the juvenile stage of frogs and toads, which have a more developed body and limbs. Both tadpoles and polliwogs are aquatic animals that live in water and eventually metamorphose into adult frogs.