help with implementing a rubbing touch event.

WhatHidesInTheDark

What is the easiest way to implement a rubbing touch event similar to that in games such as Nintendogs?
what is including in the sample in SDK only have flick,tap,shake event.
To achieve something similar to the rubbing (loving stroke) in Nintendogs, the flickevent doesent seem to be relevent enough.
Should I add the logic in TouchesMoved or TouchesBegan? And How should I do it properly?

Another question would be, how do I loop an animation?(for instance,when I am rubbing one's head,the head down animation loops).

Thank you very much,
Any help is much appreciated.