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UKBrown rat
/bɹˈaʊn ɹˈat/
/bɹˈaʊn ɹˈæt/
Examples
1. Scientists first used the brown rats to study physiology with some early experiments in the 1820s focusing on the effects of food deprivation.
2. Brown rats are valuable for research because they grow quickly to sexual maturity and are easy to keep and breed in captivity.
3. When we say lab rat, we're almost always talking about a species known as Rattus Norvegicus, otherwise known as the Norwegian brown rat.
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