Ecologists have noticed gray squirrels, minks, and muskrats living in and around the Mystic. Other animals likely to be found include:

Big Brown Bat
Coyote
Eastern Cottontail
Eastern Painted Turtle
Field Mouse
Little Brown Myotis
Northern Leopard Frog
Northern Water Snake
Norway Rat
Raccoon
Red Fox
Snapping Turtle
Spring Peeper
Star-nosed Mole
Striped Skunk
Virginia Opossum
Water Shrew
White-footed Mouse
Woodchuck

source: Geizentanner Associates, June 1997