What tell-tale sign of otter activity is often observed on muddy or snowy banks near foraging spots?

Answer

Slides

A tell-tale sign of otter activity is the presence of "slides" extemdash smooth, muddy or snowy banks where they repeatedly slide down into the water, often near good foraging spots.

What tell-tale sign of otter activity is often observed on muddy or snowy banks near foraging spots?
habitatwildlifeUSAdistributionriver otter