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Section of Mammals

Carnegie Museum of Natural History

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  • Section of Mammals
  • PA Mammals
  • Childs Frick Expedition

New World rats and mice (Cricetidae)

Allegheny Woodrat or Pack Rat

August 24, 2017 by

Allegheny Woodrat or Pack Rat (Neotoma floridana)

The mysterious decline of Allegheny woodrat populations throughout eastern North America has been the focus of much research in recent years. In Pennsylvania, there are only a few known sites where woodrat dens persist. As yet, none of the theories explaining this native rat’s diminished populations has been proven.

White-footed Mouse

August 24, 2017 by

White-footed Mouse (Peromyscus leucopus)

Found throughout the Commonwealth, this is one of the most common mammals in Pennsylvania.

Deer Mouse

August 24, 2017 by

Deer Mouse (Peromyscus maniculatus)

There are three different subspecies of deer mouse that occur in Pennsylvania. The two most abundant varieties prefer a woodland habitat. The third subspecies prefers open fields and other areas with little cover.

Red-backed Vole

August 24, 2017 by

Red-backed Vole (Clethrionomys gapperi)

Like many herbivores, this mouse will gnaw on bones and deer antlers to obtain calcium.

Rock or Yellow-Nosed Vole

August 24, 2017 by

Rock or Yellow-nosed Vole (Microtus chrotorrhinus)

This species has often been linked to the long-tailed or rock shrew Sorex dispar because of their common preference for rocky habitats. This vole looks a great deal like the more common meadow vole, except for the distinctive yellow splash of color across its nose and cheeks.

Meadow Vole

August 24, 2017 by

Meadow Vole (Microtus pennsylvanicus)

One of the most abundant and widespread mammals in the Commonwealth, it serves as prey for carnivores as tiny as the least weasel and as large as the black bear.

Pine or woodland vole

August 24, 2017 by

Pine or Woodland Vole (Microtus pinetorum)

This mammal builds a large network of subterranean tunnels where it caches food for the winter. It can be a serious agricultural pest when it girdles orchard trees in order to consume the bark during the winter months.

Muskrat

August 22, 2017 by

Muskrat (Ondatra zibethicus)

This rodent is well adapted to semiaquatic life but is not closely related to the beaver. It, too, is valued for its fur. One of its chief enemies is the mink.

Southern Bog Lemming

August 24, 2017 by

Southern Bog Lemming (Synaptomys cooperi)

Although this mammal looks similar to several of the voles that occur in the Commonweath, it can be distinguished by its grooved upper incisors, extremely short tail, and grizzled, gray-brown fur.

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