River Otter
Otters are aquatic weasels. You may find them climbing around on banks, or splashing around in the water, especially around dusk.
Raccoon
Raccoons are not aquatic, but frequently found near water, especially at night, when their eye-shine gives them away.
These are some mammals you are likely to see in and around the water.
More: Mammals …
Osprey
Ospreys, or “Fish Hawks”, are surprisingly common, and can be found just about anywhere. You’ll typically see them flying high over the water from a tree on one side to a tree on the other, occasionally diving down on some unlucky fish. Ospreys are usually seen alone, but mating pairs stay together, and I think young siblings stay together for a while as well. Ospreys are one of the biggest birds that you are likely to see. A single species has an almost worldwide distribution – pretty much everywhere except Australia.
More: Ospreys & Eagles …