mammals found in the White Clay watershed
| Latin Name | Common Name |
| Blarina brevicauda | Short-tailed Shrew |
| Castor canadensis | Beaver |
| Condylura cristata | Star-nosed Mole |
| Cryptotis parva | Least Shrew |
| Didelphis virginiana | Opossum |
| Eptesicus fuscus | Big Brown Bat |
| Felis catus | Feral Cat |
| Felis rufus | Bobcat |
| Glaucomys volans | Southern Flying Squirrel |
| Lasiurus borealis | Red Bat |
| Lasiurus cinereus | Hoary Bat |
| Marmota monax | Woodchuck |
| Mephitis mephitis | Striped Skunk |
| Microtus pennsylvanicus | Meadow Vole |
| Mus musculus | House Mouse |
| Mustela frenata | Long-tailed Weasel |
| Mustela vison | Mink |
| Myotis lucifugus | Little Brown Myotis |
| Odocoileus virginianus | White-tailed Deer |
| Ondatra zibethicus | Muskrat |
| Peromyscus leucopus | White-footed Mouse |
| Microtus pinetorum | Pine Vole |
| Procyon lotor | Raccoon |
| Rattus rattus | Black Rat |
| Rattus norvegicus | Norway Rat |
| Reithrodontomys humulis | Harvest Mouse |
| Scalopus aquaticus | Eastern Mole |
| Sciurus carolinensis | Eastern Gray Squirrel |
| Sorex cinereus | Masked Shrew |
| Sylvilagus floridanus | Eastern Cottontail Rabbit |
| Tamiasciurus hudsonicus | Red Squirrel |
| Urocyon cinereoargenteus | Gray Fox |
| Vulpes v. fulva | Red Fox |
| Zapus hudsonius | Meadow Jumping Mouse |
| Source: The White Clay Creek Project: A Prototype Strategy for Protecting Small Stream Valleys; Water Resources Center, University of Delaware; Spring 1982. | |