Order Rodentia Family Muridae

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Order RodentiaFamily Muridae

• Diastema
• 1 pair incisors
• Ears shorter than tail
• Eyes, ears visible
• Tail naked annulations visible
• Tail not longer than head and body
• Dorsal, ventral pelage nearly same color

Rattus norvegicus
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Mus musculus

• Identification Mouselike size gray-brown dorsum
  and slightly lighter venter naked tail few
  hairs on ears (TL 130-200mm)
• Distribution Statewide
• Habitat Vicinity of humans occasionally fields,
  other disturbed habitats

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Mus musculus

• Diet Omnivorous
• Reproduction Multiple litters of 3-10 each year
• Conservation Introduced common

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Mus musculus

• Other Introduced by early immigrants from
  Eurasia carries some human diseases (typhus,
  rickettsialpox)

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Rattus norvegicus

• Identification Ratlike size brown dorsum and
  slightly lighter venter naked tail little hair
  on ears abdomen swollen anterior to tail (TL
  315-460mm)
• Distribution Statewide

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Rattus norvegicus

• Habitat Almost exclusively near human
  habitations confined to 1st floor and basement
  in buildings
• Diet Grain, food scraps, chicken eggs, chicks
• Reproduction Up to 12 litters of as many as 12
  young annually
• Conservation Introduced common

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Rattus norvegicus

• Other Introduced in 1700s damages food stores
  historically significant as vector of bacterium
  causing bubonic plague

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Order RodentiaFamily Zapodidae

• Diastema
• 1 pair incisors
• Ears shorter than tail
• Eyes, ears visible
• Tail furred
• Tail much longer than head and body
• Hind feet elongate

Zapus hudsonius
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Zapus hudsonius

• Identification Pelage coarse with dark brown
  dorsal band yellowish flanks venter white
  bicolored tail
• Distribution Statewide
• Habitat Moist grassland, weedy habitats

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Zapus hudsonius

• Diet Seeds, fruits, fungus, invertebrates
• Reproduction 2 litters of 2-8 annually
• Conservation Common
• Other Hops only when scared or pursued