A "frosker" is a term used to describe a type of amphibian, specifically a frog that has adapted to live in colder environments. These frogs have unique physiological traits that allow them to survive freezing temperatures, such as antifreeze proteins in their bodies. They are often found in regions with harsh winters, where they hibernate under the frost. Froskers play an important role in their ecosystems, helping to control insect populations and serving as prey for various predators. Their ability to thrive in extreme conditions makes them a fascinating subject of study in the field of herpetology, which focuses on reptiles and amphibians.