What is a "water rat"?

The water rat, also known as the common water vole, is a semi-aquatic rodent that is typically found in or near freshwater habitats, such as rivers, lakes, and streams, in Europe and Asia. Water rats are known for their compact size, with a stocky body and short legs, and they have a dense coat of fur that is typically brown or gray in color. They are excellent swimmers and can often be seen diving and foraging for food in the water. Water rats are herbivorous, feeding on a variety of plant materials, including grasses, reeds, and other aquatic vegetation. They are known for their burrowing behavior, creating complex tunnel systems along the banks of rivers and lakes for shelter and protection. Water rats play an important role in their ecosystems as herbivores and as prey for predators such as birds of prey, foxes, and other mammals.