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Description and Physical Characteristics of Amphibians

By

Brent R. Whitaker

, MS, DVM, University of Maryland, Institute of Marine and Environmental Technology

Last full review/revision Jan 2020 | Content last modified Feb 2020

Amphibians come in a wide range of sizes and colorings. The largest amphibians, the Chinese and Japanese giant salamanders, can grow to 6 feet long (1.8 meters) and weigh up to 140 pounds (63 kilograms). The smallest include some species of poison dart frogs measuring less than 0.5 inches long (1.3 centimeters) and weighing only a few grams (less than an ounce). One thing that most amphibians do have in common is a moist skin, often coated with a slimy mucus. Adult amphibians breathe not only through their lungs but also through their skin, and the moisture is necessary for proper oxygen exchange. The life span of amphibians varies widely, from a few months to many years.

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Fluid Therapy in Animals
Abnormalities of circulation can be due to a number of causes and may result in circulatory shock, an emergency situation. All types of circulatory shock respond to administration of fluid therapy to some extent, but some types require additional medications. Which type of circulatory shock is most readily handled with fluid therapy alone?
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