Muskrat

Ondatra zibethicus

Wetland rodent of Assateague marshes. Look for V-wakes in ditches and push-up houses of vegetation.

Muskrat (Ondatra zibethicus) — Ocean City, Maryland
Photo via Wikipedia / Wikimedia Commons — Muskrat

Quick facts

GroupRodent
Likelihood nearby★★★☆☆
Habitats Salt marsh, Coastal bays, Assateague State Park, Assateague National Seashore
Seasons (this coast)year-round

How to recognize them

  • Stocky brown rodent with a vertically flattened, sparsely haired tail (unlike a beaver’s paddle).
  • Smaller than a beaver; often swimming with just the head above water.

Biology notes

  • Eats marsh vegetation and some aquatic animals; builds lodges or bank dens.
  • Important prey for raptors and foxes in the coastal marsh food web.

Where to see them around Ocean City

  • Assateague salt-marsh ditches and pools.
  • Coastal bay marsh edges near Ocean City on a falling tide.

When to look

  • Year-round; dawn/dusk activity is easiest to catch.

Viewing tips & etiquette

  • Scan for wakes and chewed vegetation platforms rather than expecting a long look.

Sources & further reading