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Rats! Humans, Rodents Have Lots in Common

Much-maligned animals laugh, dream, look forward to sex

By Heather McPherson,  Newser User

Posted Jul 24, 2007 5:48 PM CDT

(Newser) – Rats may be repulsive to some, but scientists are finding that they're a lot like humans. A recent crop of behavioral studies shows that rats are astonishingly self-aware, Natalie Angier reports in today's Times. They laugh when tickled and dream in epic narratives. There are even rat optimists and rat pessimists, their personalities forged by upbringing and environment.

Rats also know how to distinguish between good and bad sex, while giving every indication they look forward to the good kind, says one scientist. Rats are responsible for carrying deadly diseases, but only two species out of 120 are considered dangerous to humans. They also save human lives: Rats are the preferred experimental animal for vital medical studies.

A recent study suggests rats are capable of Metacognition, the awareness that there is information you don't know, a talent previously detected only in primates.
A recent study suggests rats are capable of Metacognition, the awareness that there is information you don't know, a talent previously detected only in primates.   ((c) AlexK100)
A lab-rat demonstrates intelligence by attempting to circumvent the scientific process in this archetypal experiment.
A lab-rat demonstrates intelligence by attempting to circumvent the scientific process in this archetypal experiment.   (Shutterstock.com)
The first animal domesticated strictly for research, the white rat has become synonymous with scientific experimentation.
The first animal domesticated strictly for research, the white rat has become synonymous with scientific experimentation.   ((c) audrey_sel)
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Scientific experiment attempts to observe a rat's potential ability to count, and remember sequences.   (fuzzybooks (YouTube))

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