Scientists test magnetic heat as non-surgical neutering for cats and rats

Picture neutering a stray cat without any surgery, stitches, or recovery cage. That's the promise behind a new approach called magnetic nanoparticle hyperthermia, or MNH. Two recent studies offer the most detailed look yet at this non-surgical neutering technique. One followed rats for nearly a year; the other tested the method in cats for the first time. Together, they help answer whether it…