Having experienced "Quill" problems in the past, I have a suggestion for future considerations. Sometimes this works okay, and sometimes you can't tell if it helps or not.
Cut the quill ends off, or cut them in half, with a pair of side cutters, or wire cutters, BEFORE you attempt to pull them with pliers. This relieves the so-called 'vacuum' which exists inside the quills, and makes them easier to extract from the animal tissue without creating ADDITIONAL trauma in the entry wound.
It is a terrible situation to confront no matter how minor the damage happens to be!
DOC HARRIS
ps- By the way - you can buy a product called "Skunk Off" that, when used on a dog, will MINIMIZE the odor considerably - at least until the dog comes in from a rain storm and gets his hair soaking wet, then that same old familiar aroma wafts its way into your olfactory nerves and -- WHAMM-O - there it is again!

:gag: You can also use concentrated tomato soup (LOTS of it!) and wash your dog with it by using the tomato goop as soap - then rinse - rinse - rinse - rin . . . . well, you get the point!!