Each litter is eight to 16 baby rats, Richardson said ... “The rat is the third most successful mammal behind humans and house mice. So it evolved and engineered to live alongside us ...

Working with rats between 1958 and 1962 ... according to Distillations magazine’s Sam Kean, no baby mice were surviving more than a few days. The society plummeted toward extinction as the ...

Each litter is eight to 16 baby rats, Richardson said ... “The rat is the third most successful mammal behind humans and house mice. So it evolved and engineered to live alongside us ...

Each litter is eight to 16 baby rats, Richardson said ... “The rat is the third most successful mammal behind humans and house mice. So it evolved and engineered to live alongside us ...