Granted they are totally cute and we totally love them, but it's still hard to find a pet owner who doesn't have at least one gripe about her fluffy darling. While teaching even the most stubborn pet (and stubborn owner) change is possible, getting started can be rather intimidating. North's jumping is by far my biggest obstacle but what about you? If you made a doggie-training to-do list, what would be your number-one thing to tackle?