A man was recently seen ripping apart and eating pieces of a New York City rat on a Bronx street, according to video posted ...

We purchased a batch of 40 adult Long-Evans male rats (300–350 g body weight) from a laboratory animal supplier for studies on sexual behavior. We kept the males in pairs in shoebox cages in a ...

Since 1999, the American opioid epidemic has killed more than half a million people, and the staggering majority have been ...

View Full Profile. Learn about our Editorial Policies. When researchers castrated a male rat, implanted a uterus into the animal, surgically joined its circulation to that of a female rat, and ...

According to a new study by WashU Medicine researchers, male and female rats with a chronic pain condition release different ...

"The study aimed to assess the effects of unpredictable chronic mild stress (UCMS) during prepuberty and adolescence and the propolis supplementation on cognitive functions in adult male rats." ...

Brain cells (magenta) in the reward center of a rat’s brain release dopamine in response to opioids. According to a new study by WashU Medicine researchers, male and female rats with a chronic pain ...