

What is the class name name of rat?


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The best-known rat species are the _______ rats (Rattus Rattus) and the brown rats (Rattus norvegicus).

black and white

The best-known rat species are the black rat (Rattus Rattus) and the brown rat (Rattus norvegicus). The group is generally known as the Old World rats or true rats, and originated in Asia.

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Is Domestic rats are same as wild rat ?

no because wild rat color is white
no because domestic rat brain is small
yes because they are same species member

Domestic rats differ from wild rats in many ways. Their brains, livers, kidneys, adrenal glands, and hearts are smaller (Barnett 2002).

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The Norway rat is also known as

"sewer rat"
"brown rat"
"black rat"
"domestic rat"

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What is the average size of Norway rat ?

4 to 5 inches
5 to 7 inches
7 to 10 inches
10 to 12 inches

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Rats bathe themselves, usually _________ times a day or more.


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What is the basic body size of roof rat ?

4 to 8 inches
6.5 to 8 inches
6.5 to 10 inches
4 to 10 inches

Roof rats have a slender body about 6 1/2 to 8 inches long. They weigh about 6 to 12 ounces. Their color varies from black to brownish-gray.

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Rats have been kept as pets at least since the late _________

16th century
17th century
18th century
19th century

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Which University established a population of domestic albino brown rats to study the effects of diet and for other physiological studies in the year 1895 ?

Clark University
Western University


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Which of these is not a Norway rat ?

Rattus norvegicus
Brown rat
Sewer rat
Black rat


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