One thing is certain: They’re everywhere. NEW YORK CITY Adaptable and smart, rats of several species have evolved to thrive in major cities—yet the sight of a rat scurrying across West ...

Their sizes vary, but the standard Rat Terrier’s average size ranges between 13 and 18 inches in height, with their weight being anywhere from 10 to 25 pounds. The terrier breed is smart, and the Rat ...