Nail clipping is humane. However, just like with human nails, if you clip too close to the quick (the blood vessel), which can happen for myriad reasons (accidentally, it's good to know Corn Starch can be used as a styptic in a pinch, and you can also purchase styptic powder. Ideally, if the blood vessel is cut you should get the wound looked at so it can be assessed and cleaned by a veterinarian.
