| Large-eared, but not large, Notiosorex shrews weigh only about 3-5 g. Three to five shrews equal the weight of one compact disk (about 15 g). "Large-eared" is itself a comparative term. Compared to the ears of a pygmy mouse (Baiomys species), the shrew's ears are tiny, but they stick up beyond the fur and are clearly visible. Large-eared Gray Shrews are most active at night, twitching their noses and whiskers as they hunt for invertebrates to eat. They build tiny, bird-like nests, usually on the ground, of bark, leaves, and hair. Although shrews are usually solitary, in captivity several of this species can live together in the same cage without fighting.
Head and Body: 48-65 mm; Tail: 22-31 mm
Coues, E., 1877. Bulletin of the U.S. Geological and Geographical Survey of the Territories, 3:652.
Mammal Species of the World (opens in a new window).