Tuesday, 17 December 2013

rats

Rat
Rodent
  • Rats are various medium-sized, long-tailed rodents of the superfamily Muroidea. "True rats" are members of the genus Rattus, the most important of which to humans are the black rat, Rattus rattus, and the brown rat, Rattus norvegicus.

  • Scientific name: Rattus
  • Mass: 0.1 – 0.3 kg (Black rat, Adult)
  • Rank: Genus
  • Length: 32.4 – 46.4 cm (Black rat, Adult)
  • Tail length: 17 – 25 cm (Black rat, Adult)
  • Gestation period: 21 d (Brown rat), 21 – 24 d (Polynesian rat)
    • Lower classifications: Spiny Ceram rat, Nillu rat, Nonsense rat,
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    3 comments:

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