when i got mushroom, he was about 2 years old, and totally not happy about having his nails trimmed or his feet touched. he'd turn into a total thrashing shark. he wouldn't break skin or snap nasty, but he'd put teeth on you hard enough for it to hurt. to trim his nails, i'd have to take him in to work, muzzle him, and have somebody help me wrestle him. but then i thought, this is stupid. it's stupid to have a dog whose nails i can't trim on my own. so i started working on it. and it took awhile. but now i have a dog who, like tonight, will lay on his side on the floor and let me trim his nails without a struggle, without complaint, without grumbling or mauling me. he's not happy about it, but he accepts it, because i've taken the time to teach him. it's such a little thing, but i'm proud of him.