Interactivity.Behavior vs attached properties

Question

I\'m trying to find some differences between these approaches. Is there any situation where behaviors are used and the same functionality could not be done with attached propert

Answer 1

Behviors are based on attached properties. That means if you can't find specific behavior - you write your own, either based on behavoirs framework provided by Blend or by creating your own AP...

I always though that behaviors are great evidence of attached properties power. Just incredible what you can get with them.