I read "The atr of raising a puppy" before I got a dog and I learned sooo much from it. I started when I first got each of my babies touching their feet, spreading their toes, opening their mouths, putting my hand in and touching thier teeth, touching their ears, combing their hair, touching around their eyes...stuff like that. I did it every day from the first day and now none of them care. One of my girls hates having her feet touched, but she lets me do it, and none of them care for having me open their mouth but they put up with it.
It might be best to start off slow. While loving them, pat their feet, hold it in your hand and rub it. Do this while being very sweet and talking nice. If you do this every day, a few times a day after a while they will not give you a hard time about it. Smile and look happy "Hey handsome boy!" scratching in their favorite spot and touch their feet at the same time. You gotta seduce 'em into it!!!
Vicki