Mammals

Since all of our mammals are generally pretty big, especially compared to spiders or insects, you might think it would be easy to get pictures of all of them -- it isn't. Many are nocturnal. Others, like moles & voles, pretty much stay underground. I have left off the list all of the ocean dwellers because Lexington isn't on the coast.

Making the list of Massachusetts mammals was depressing. We have extirpated 8 species since Colonial times, including the Elk, American Marten, & Wolverine. We've also brought most large whale species to the edge of extinction.


Didelphidae (New World Opossums)

Didelphis virginianaDidelphis virginiana (Virginia opossum) (Lexington, 2/27/01 9pm)


Sciuridae (Tree Squirrels and Marmots)

Sciurus carolinensisfemale Sciurus carolinensis (Eastern Gray Squirrel) I finally bit the bullet and put a picture in. I was hoping for a more interesting one, but this one isn't too bad even though it was shot through glass.

Tamiasciurus hudsonicusTamiasciurus hudsonicus (Red squirrel) (Lexington, 4/9/05 2pm)

Glaucomys sabrinus (Northern Flying Squirrel) May not be around anymore.

Glaucomys volans (Southern Flying Squirrel)

Marmota monax (Woodchuck)

Tamius striatusTamius striatus, male (Eastern chipmunk) (Willard's Woods, 6/24/07 11am) This chipmunk & I played a little game on a boardwalk across the marsh. I'd look away and he'd try to race past me. As he got within about 6 feet, I'd turn and look at him. He'd stop and stare and then run away. Repeat. He finally got fed up and jumped down into the marsh.


Castoridae (American Beaver)

Castor canadensis (American Beaver)


Dipodidae (Jumping Mice)

Napaeozapus insignis (Woodland Jumping Mouse)

Zapus hudsonius (Meadow Jumping Mouse)


Cricetidae (Mice, Voles, and Lemmings)

Microtus pennsylvanicus (Meadow Vole) (Lower Vine Brook, 11/12/12 9am) This one is living in tunnels under our front garden. This entrance is in the window well.

Microtus pinetorum (Woodland Vole)

Myodes gapperi (Southern Red-backed Vole)

Ondatra zibethicus (Common Muskrat) (Lower Vine Brook, 10/1/11 12pm)

Synaptomys cooperi (Southern Bog Lemming, special concern)

White-footed mousePeromyscus leucopus (White-footed mouse) (Lexington, 9/20/02 10:30pm, 11/8/07 11pm) The first fellow was trying to squeeze into a tiny hole in the side of our house. Once I alerted our cat to the problem, and then pulled the mouse out of the hole by the tail (which our cat was too lazy to do), the problem was taken care of. The mouse on the right was more successful -- he or she made it into the house. Alas, it fell into an empty garbage can and was returned to the woods.

Peromyscus maniculatus (North American Deermouse)


Muridae (Old World Rats and Mice)

Mus musculus (House Mouse) Introduced from Europe.

Rattus norvegicus (Brown Rat) Introduced from Europe.


Erethizontidae (New World Porcupines)

Erethizon dorsatum (North American Porcupine)


Leporidae (Hares and Rabbits)

Lepus americanus (Snowshoe Hare)

Sylvilagus floridanus (Eastern cottontail rabbit) (Lexington, 7/14/08 5pm)

Sylvilagus transitionalis (New England Cottontail)


Soricidae (Shrews)

Blarina brevicaudaBlarina brevicauda (Northern Short-tailed Shrew) (Lexington, 2/7/10 4pm) This one was darting in and out of its snow tunnels to pick up sunflower seeds.

Sorex cinereus (Cinereus Shrew)

Sorex dispar (Long-tailed Shrew, special concern)

Sorex fumeus (Smoky Shrew)

Sorex hoyi (American Pygmy Shrew)

Sorex palustris (American Water Shrew, special concern)


Talpidae (Moles and Shrew-Moles)

Condylura cristata (Star-nosed Mole)

Parascalops breweri (Hairy-tailed Mole)

Scalopus aquaticus (Eastern Mole)


Vespertilionidae (Vesper Bats)

Eptesicus fuscus (Big Brown Bat)

Lasiurus borealis (Eastern Red Bat)

Lasiurus cinereus (Hoary Bat)

Pipistrellus subflavus (Eastern Pipistrelle)

Lasionycteris noctivagans (Silver-haired Bat)

Myotis leibii (Eastern Small-footed Bat, special concern)

Litte brown myotisMyotis lucifugus (Little brown myotis) (Lexington, 4/28/05 9am) Myotis lucifugus juvenilejuvenile (Lexington, 6/24/07 9am) I was very suprised to find this bat on my kitchen steps. I had thought it was dead and went to get the shovel to bury it. When I returned it had moved a bit! When I tried to pick it up with the shovel, it made an impressive display of teeth and quite a nasty screech. I moved it into the woods in the hopes it would recover from whatever ailed it. I had hoped the Lexington Animal Control officer would pick it up and test it for rabies, but they wouldn't take it.

Myotis septentrionalis (Northern Myotis)


Felidae (Cats)

Lynx rufus (Bobcat)

Puma concolor (Cougar, Mountain Lion)


Canidae (Dogs, Foxes, & Wolves)

Canis latrans (Coyote)

Urocyon cinereoargenteus (Gray Fox)

Vulpes vulpes (Red Fox)


Ursidae (Bears)

Ursus americanus (American Black Bear)


Mustelidae (Weasels, Minks, Martens, and Otters)

Lontra canadensis (North American River Otter)

Martes pennanti (Fisher)

Mustela erminea (Ermine)

Mustela frenata (Long-tailed Weasel)

Neovison vison (American Mink)


Mephitidae (Skunks)

Mephitis mephitis (Striped Skunk)


Procyonidae (Raccoons, Coatis, and Ringtails)

Procyon lotor (Raccoon)


Cervidae (Deer, Elk, and Moose)

Alces americanus (Moose)

White-tailed deerOdocoileus virginianus (White-tailed deer) (Willard's Woods, 6/30/03 11am, 7/20/14 2pm) I am not a fan of deer. If they didn't carry ticks, I'd like them a little better, but there are still far too many of them in the Eastern U.S. We could kill two birds with one stone, so to speak, by reintroducing mountain lions throughout their original range. This would reduce the deer numbers while helping restore our biggest cat. There would undoubtably be more incidents of missing pets, but I think that would be well worth it (our cat was probably eaten by a coyote, so I am not unfeeling in these matters). I was stunned by how close I was to the deer in the second photo before I noticed it. I could almost feel the ticks leaping off it onto me.


? (Lower Vine Brook, 3/28/09 1pm) I don't normally include photos of dead animals, but this jaw bone nestled in the moss made for a nice composition.


Seen, but not photographed:

Mephitis mephitis (Striped skunk) Again, I've seen plenty, but no photos. My desire for a good quality photo directly conflicts with my sincere desire never to be sprayed.

Marmota monax (Groundhog, Woodchuck) I think one lived under our old porch, but it was very secretive. I've gotten several shots of its rear end...

At least 2 different species of bats, but I'm not sure which ones. One was quite large. The smaller were probably Brown bats.

Procyon lotor (Common raccoon) Growing up in New Jersey they were regulars at our garbage. We even had a mother with her cubs come into our screened porch through the cat door.

Canis latrans (Coyote) I saw one crossing the street to get to more conservation land down the street from our house. My wife & son have seen several in that area. One was also very likely responsible for the death of our cat.

Foxes -- I'm not sure if they were red or gray fox, and I may have seen both (Lexington)

I've seen several other small mammals, probably shrews or voles, as well as some more mice.


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