[YorkieMother]

First he is not spoiled. He is scared.. he making the rules and it is a big old world and it a lot for a wee little dog to handle so time to change.

First what Reggie is doing when your fiancée is tickling you is NORMAL totally dog correct to him. He is doing a behaviour that is called splitting up. Dogs do not do that to other dogs and if they do it a start of a fight so he being a very good dog and stopping the behaviour before a fight.. he does not know it ok.

Teach him sit and wait and do short tickles with lots of food treats as he sits you are teaching him and incompatible behaviour he can not sit and get treats and be splitting you two up.
SO first behaviour is a good well spoken dog talking dog not understanding human.

He hates children darn again normal those fast moving screaming band of brats ( I love kids) are scary and well I want to make then SHH to and stop moving in strange ways.
So kids find a nice calm kid that listens to you and have them toss treat at the dog at a distance the dog feels safe... then slowly and I mean slowly over days if not weeks have the kid move closer and closer till the dog can be beside or in front of the child and then hand feed right out of the kids hand.

so again normal dog doing a normal thing as he does not know how humans work.

Rawhides are gone.... you have to remove one or the other you fiancé not the one. Stop fighting with him the dog that is... I like to see your fiancé hand feed to dog for two weeks all his kibble at least one meal.
I also like to see you start a nothing in life is free the dog works for food or to sit on the couch he needs to down or sit before getting up.
Feet shoes on and if the dog goes after the feet it will not hurt and you can ignore him attacking and you can leave the are if he does not stop.
if your telling him no you are reinforcing the behavior as you are drawing attention to it. You can also teach something like down or high five which means he can no be chewing feet.

The other which will work and not so fun is put the shewing on the feet on cue. every time he goes for the foot you say eat it and he goes for the foot you treat that... ok hang on it in the last step you get control. the next step is not it on cue you never give the cue to eat it without a pair of shoes on... it becomes a trick.

What you are dealing with is lack of understanding of the way he is to work in the human world if he lived souly and only with dogs he be great.

JL