To keep rat as a pet, you need to follow utmost care while buying a Pet Rat Cage. A pet rat spends most of its time in a rat cage, so a comfortable cage is important to keep it happy. Parameters like size, ventilation etc. need to be checked before bringing home rat cages. Wire mesh rat cages are the first choice of the rat lovers as they are sturdy and provide an airy ambiance to the rats. But while buying a mesh rat cage you need to decide the spacing between its bars. Remember that if a rat is able to put its head through a gap then it can also make its body to squeeze out of that gap. Also, young rats will require relatively lesser gap between the bars.