black rat

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Related to R. rattus: Black rats, roof rats

black rat

n.
A common rat (Rattus rattus) found worldwide, especially in populated areas, having a black or dark brown coat.

black rat

see black rat.
References in periodicals archive ?
The degree of their external similarity suggests that spatial niches of these species may overlap somewhat, but due to larger sizes and higher levels of specialization Brachytarsomys species are probably not threatened by R.
The two Brachyuromys species are very similar and differ from R.
The morphology of Brachyuromys demonstrates specialization for a herbivorous diet and a semifossorial locomotion, while R.
Based on their ecology-dependent Craniodental characters, Eliurus species differ from R.
The difference in size and external dissimilarity between R.
ingens has a longer rostrum and wider zygomatic arches than in R.
The skull of Nesomys has a remarkably long rostrum and slightly broader zygomatic arches than R.
The close morphological similarity in size and body proportions between Nesomys species and R.
norvegicus may make it a potential competitor for R.
In contrast, we provide evidence of HEV genotype 3 infection in wild R.