[Teresa Ford]

First let me say you have gotten some very good advice, even if every one does not feel exactly the same.
WHAT About My Place ? Adding new family members can be stressful. Each member human and canine alike have to figure out where the newest member fits. Older Yorkies may feel threatened and try to bully the new Yorkie especially if they are the same sex and both adults. If this is what is happening You may want to remind both dogs that you are the Mommy. You are the PLP (Provider, Leader, Protector) We do not allow any physical attacks between family members. The one who is being a bully gets a 5 minuet time out in the laundry room, alone with the door shut. (The PLP makes the rules and protects.) We do not correct play fights, warning growls or high pitched protest barks. If dogs get stiff legged with ears pointed foreword, tail barely moving, teeth with gums showing, direct eye contact for more than a few seconds, eyes that are narrow little slits, (some Yorkies can stiffen the hair on their back and neck area) these things all point to serious aggression. Break the fight trance. Throw a pillow past them, use a cue word like Enough, or Stop It , stomp your foot or clap. Give them a cool down period in different rooms.
A different kind of problem is an adult with a puppy. The adult is unhappy about the the pup and does not want to share the people, and resources with the little intruder. In this case we only interfere if the adult dog makes the pup yelp. If the adult makes a puppy yelp, we correct the adult firmly with the cue word 'Enough' said firmly. If necessary we give the adult a brief time out. We always feed adults and puppies separately. Puppies should eat puppy food in their safe crate, where they don't have to compete or protect their food. Hope this helps.