ringtail: definitely not.
black squirrel: could be. Are they much bigger than fox squirrels? I thought they were just a color variation of the gray squirrel?
...
200yds is a long way to be judging size, esspecially a small animal; and black animals are the hardest to judge. Chances are it was a black squirrel.
Near a body of water, could also have been an otter .
Near a body of water, could also have been an otter .
Yep...good possibility, otter
Otter?