The sinuous otter is an excellent swimmer and can be seen hunting in wetlands, rivers and along the coast.
They use their powerful tail to zip through the water, hunting for fish and other snacks, such as crabs.
Otters are a real success story, bouncing back from near extinction following excessive hunting.
Look for five-toed footprints along riverbanks and waterways.
Wildlife facts kindly provided by Cheshire Wildlife Trust.