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Celebrating 100 Years of Science! | 1925-2025

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Symbol Package
Groundhogs are covered with two coats of fur: a dense grey undercoat and a longer coat of banded guard hairs that gives the groundhog its distinctive
Groundhog (Marmota monax)
Nutria (Myocaster coypus) are an introduced semi-aquatic rodent species originally brought to Maryland for fur in the 1940s, but are since considered to be nuisance species, destroying large areas of marshland, particularly around the Blackwater National Wildlife Refuge.
Nutria (Myocaster coypus)
Nutria (Myocaster coypus) are an introduced semi-aquatic rodent species originally brought to Maryland for fur in the 1940s, but are since considered to be nuisance species, destroying large areas of marshland, particularly around the Blackwater National Wildlife Refuge.
Nutria (Myocaster coypus)
Illustration of Oryzomys argentatus (Silver Rice Rat)
Oryzomys argentatus (Silver Rice Rat)
Illustration of Castor canadensis (North American Beaver)
Castor canadensis (North American Beaver)
Illustration of Cynomys spp. (Prairie Dog)
Cynomys spp. (Prairie Dog)
Illustration of Spermophilus richardsonii (Richardson's Ground Squirrel)
Spermophilus richardsonii (Richardson's Ground…
Illustration of a beaver dam
Castor canadensis (North American Beaver) : dam
Illustration of a beaver hut
Castor canadensis (North American Beaver) : hut
Illustration of Chaetodipus hispidus (Hispid Pocket Mouse)
Chaetodipus hispidus (Hispid Pocket Mouse)
Illustration of Geomys bursarius (Plains Pocket Gopher)
Geomys bursarius (Plains Pocket Gopher)
May 2005, North Fork Tred Avon River, Easton, MD
Muskrat
May 2005, North Fork Tred Avon River, Easton, MD
Muskrat swimming
Illustration of Dipodomys ordii (Kangaroo Rat)
Dipodomys ordii (Kangaroo Rat)
Illustration of Marmota flaviventris (Marmot)
Marmota flaviventris (Marmot)
Illustration of Myocastor coypus (Nutria)
Myocastor coypus (Nutria)

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