Hi there, Part of my dog's nail has chipped off and I want to trim it back to avoid further damage, but I don't want to accidentally hit the quick. He's got black claws (joy!) which makes it hard to know how far I can go, but he's very good about it, and so far we haven't had any accidents in 2-3 years! Any help you can give would be greatly appreciated. FYI: this toe is a bit deformed and never touches the ground, which is why the claw is so long. It's quite hard to clip properly, so I'm hoping this is a good opportunity to get rid of some of the length!