[Maximo]

I agree with Ann and Joan's posts above.

Interaction between your Yorkie and Poodle: as Joan wrote, give your Poodle a place to escape when she wants. My older boy went to the couch where the younger one was unable to jump.

The wrestling is not indicative of a mean disposition. Puppies do play hard and will even bite legs and test the limits of other dogs. Supervise when you can, redirect to constructive activity like brief games of fetch or a few minutes of training: sit, stay, down. My boys love performing tricks for treats and the exercise always settles them down.

Stay calm and do not show frustration or anger, which will likely only crank up your puppy more. Establish keyword and phrases with your puppy like "settle down." Reward and praise when he listens to you.

Affection and head petting: Keep in mind that these small guys are rightly concerned about what is coming in over their heads. Are you standing when you try to pet his head? Try getting down on the floor at his level, ease in your hand from behind the ears. Find out what kind of petting/scratching/massage he likes. My boys are not fond of my running my hand down their backs. They prefer chest/belly rubs, gentle massage behind the ears and on the shoulders.

For general affection, don't foist it on him, especially as a puppy. Let him come to you on his terms. Talk to him. When he is relaxed, he will come to you. Always make him feel free to go on his way when he wants.

When you practice "come," reward him for coming to you and let him go on his way. Make sure you are not calling him to come for things he isn't excited to do.