Related topics: brain · memory · neurons · hippocampus

Secret lives of rats: Studying the ecology of urban ship rats

"Rats are a particularly damaging invasive species in New Zealand," Henry says. "Understanding them better, including how they move through an urban environment and what their habitat preferences are, will give insight into ...

How rat-eating monkeys help keep palm oil plants alive

Found as an ingredient in many processed and packaged foods, palm oil is the most widely consumed vegetable oil. Now, researchers reporting in Current Biology on October 21 have discovered an unlikely ally for palm oil production: ...

A rat's brain, on and off methamphetamine

Drug addiction is a vicious cycle of reward and withdrawal. Chronic users often relapse because of the unpleasant physical and psychological symptoms they experience when they stop taking the drug. Now, researchers report ...

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Rat

50 species

Stenomys Thomas, 1910

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. Many members of other rodent genera and families are also called rats and share many characteristics with true rats.

Rats are typically distinguished from mice by their size; rats are generally large muroid rodents, while mice are generally small muroid rodents. The muroid family is very large and complex, and the common terms rat and mouse are not taxonomically specific. Generally, when someone discovers a large muroid, its common name includes the term rat, while if it is small, the name includes the term mouse - scientifically, the terms are not confined to members of the Rattus and Mus genera. Compare the taxonomic classification of the Pack rat and Cotton mouse.

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