North America wasn't always crawling with rats. Black rats (Rattus rattus) were the first to sail over with Europeans in the 1500s, possibly reaching the Caribbean shores with Christopher Columbus ...

Richardson said he hopes this study nudges city officials and scientists to gather more data about rats. Banner image of a roof rat (Rattus rattus) by Rhett A. Butler/Mongabay.

The dominant rat in New York City is the Norway rat, Rattus norvegicus, also known as the brown rat. Brown rats are burrowing animals that are widest at the skull, so they can slip into any space ...

Claiming that it would be too expensive, research industry lobbyists succeeded in obtaining a 2002 amendment to the Animal Welfare Act specifically excluding rats (of the genus Rattus), mice (of the ...

Christie is a seasoned science journalist and cell and molecular biology PhD; her debut book Venomous: How Earth’s Deadliest Creatures Mastered Biochemistry, received widespread acclaim. She was a ...

1. Brown, R.E. Stimuli eliciting urine-marking in the rat (Rattus norvegicus). Bulletin of the Ecological Society of America, 1973, 54, 44. (Abstract). 2. Brown, R.E. Sexual arousal, the Coolidge ...

The answer to the latter, it became clear, was much more than a T-shirt. The brown rat, or Rattus norvegicus, isn't all that different from the average New Yorker. It hates long commutes and loves ...

Rats have become the latest addition to the menagerie of animals infected with the H5N1 bird flu virus. The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service reported ...