Mammals most often photographed in Massachusetts, from 85,866 research-grade iNaturalist observations, with their seasonal patterns.
Massachusetts mammal calendar (top 40)
Fewer More observations (relative to each row's peak month)
Activity by month (all species)
Most-photographed mammals in Massachusetts

Eastern Gray Squirrel

Eastern Cottontail

White-tailed Deer
Eastern Chipmunk

Common Raccoon
Coyote
American Beaver

American Red Squirrel
Red Fox

Groundhog

Muskrat
Grey Seal

Virginia Opossum

North American Porcupine

Striped Skunk
American Black Bear
