Norway Rat / Sewer Rat
This is the largest of the commensal rodents. It damages/destroys materials by gnawing, eats and contaminates stored food, and carries disease.
- Common Name: Norway/Brown/House/Wharf/Sewer Rat
- Scentific Name: Rattus norvegicus (Berkenhout)
- Class/Order/Family: Mammalia/Rodentia/Muridae
- Metamorphosis:
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Size
Combined head and body length of 7 to 9.5" long.
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Color
Brown with scattered black hairs.
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Biology
Poor vision. Other senses are keenly developed.
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Habit
Primarily nocturnal. Very cautious.
Milwaukee, Waukesha, Ozaukee, and Washington Counties