Rat infestation in many world cities appears to be soaring, especially in Washington, and a new study blames warming ...

Chamroeun is willing to sell a pair of rodents for $25 or a set of two males and one female for $35. “Each female can produce a litter of 5 to 6 offspring,” he added. In addition to selling and ...

These are a few of the "bipaternal" mice produced in the experiment who survived to adulthood. | Credit: Courtesy of Zhi-kun Li, et al. Scientists in China have unveiled a new method for breeding baby ...

An extra month may not sound like much, but female rats can have a litter every month. Each litter is eight to 16 baby rats, Richardson said: “That is a recipe for accelerated population growth.” ...