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.Know More
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
The difference between a lizard and a salamander is that a lizard is a reptile and a salamander is an amphibian. Reptiles live solely on land, while amphibians spend part of their time in the water. Hence amphibians need to be near a source of water while reptiles don't.Full Answer >
The largest difference between the Kangal and the wolf is that they are separate species. The wolf is known as Canis lupus, while the Kangal is a domestic dog and is scientifically known as Canis familiaris. Although dogs are descended from wolves, they are not considered wild and are more likely to retain juvenile traits because of domestication. Wolves are also generally more intelligent than dogs due to larger brains.Full Answer >
The main difference between parasites and predators is that the former are organisms that live at the expense of another organism, called the host, while the latter capture and feed on another organism, called the prey. The Australian Museum explains that parasites are generally smaller than their host, whereas predators are typically larger than their prey. Moreover, parasites do not kill their host, but predators often kill their prey.Full Answer >
The primary difference between vertebrates and invertebrates is the presence of a backbone or spinal column, which vertebrates have and invertebrates do not. Examples of vertebrates are humans, dogs, cats and birds. Examples of invertebrates are flatworms, mollusks, sea urchins and insects.Full Answer >