Hands down Renee! We learned so much from her. We started our first class with a dog that was reactive and fearful, terrible with other dogs, strange people, and he was destructive. Now he lives very peacefully with 3 other dogs, his separation anxiety is almost non existent (he still has the odd day where he gets worried about us leaving but easy to deal with now)It's a lot of work to get there but it is so worth it. I'm not sure we would have been able to accomplish that without Renee's help