According to Reference.com, there is no difference between a pollywog and a tadpole. Both words describe the larval stage of the toad or frog. These amphibians for the most part live in the water during this stage of their lives.Continue Reading
Frogs and toads begin their lives as eggs laid in the water. The eggs hatch into tadpoles. As the tadpole matures, it goes through a metamorphosis by gradually growing legs followed by the arms. The tail of the amphibian is then absorbed. About the same time the animal develops legs, it is also developing lungs, allowing it to live on the land. Late during the tadpole stage, the animal lives near the water's surface and is breathing air. During the final part of the amphibian's life as a tadpole, the small enclosed mouth changes to a mouth as wide as its head.
As tadpoles become frogs or toads, their diet also changes. During the tadpole stage, the amphibian is an herbivore. Algae and plants in the water meet its nutritional needs. However, in the adult stage, it becomes an omnivore, with a diet consisting primarily of insects.
The etymology of both tadpole and pollywog depend on the Middle English word "pol," meaning head. Tadpole uses another Middle English word, "tadde" from which the word toad derives, while pollywog uses "wiglen" meaning to wiggle.Learn more about Zoology
A tadpole can be identified by the length of the body, the length and shape of the dorsal tail fin and the ventral tail fin, the tail musculature, and the placement of the eyes and nostrils. The tadpole's habitat and the time of year it's found are also clues. Still, identifying tadpoles remains difficult because tadpoles are small and are in a constant state of metamorphosis.Full Answer >
During the sixth week of pregnancy, the baby is the size of a BB pellet and resembles a tadpole in shape, according to WebMD. Its arms, legs and eyes are beginning to form, and its heartbeat might be detectable on an ultrasound.Full Answer >
After hatching from its egg, a frog emerges as a tadpole. Like other amphibians, a frog undergoes dramatic changes throughout its life cycle in a process known as metamorphosis.Full Answer >
A frog is first a tadpole and then a froglet before becoming an adult frog. It takes between 3 to 4 months for a frog to go through the complete growth cycle and become an adult frog.Full Answer >