When we got our Yorkie she was only 1.8 lbs. at 4 months so I was really worried about our other dog , 3 year old Sydney ( who is named Syd Vicious
) and how she would react with the puppy. As expected she did not like Chloe at all
!! Sydney is a terrier mix ( Maltese and Australian terrier , and is very hyper and active ...high energy dog! She loves all people and other dogs outside the home ,but didn't like another dog coming into her world)
She would bark and growl and we kept her
completely away from her. She only got to see and smell her through our kitchen gate. Even when we were in the same room each of us held a dog and they were not allowed to play on the floor. Eventually we started moving closer to each other and letting Sydney smell Chloe , but not letting Chloe smell at Sydney.
After a couple weeks we started letting Chloe smell back ( all while still holding both dogs) we kept this up for a couple more weeks. Then later I started walking Chloe into the Kitchen while I held her and sat on the floor and played with Syd while I held Chloe.And kept giving Syd a training treat and saying Good Girl everytime she sniffed Chloe and didn't react.
After about another month she was so use to her that Syd didn't even bother with her at all. Chloe will go to Sydney's bowl and eat her food and get in Sydney's bed with her , and Syd could care less. BUT I still won't let them out of my sight when they are together. I don't think Syd would bite her , but she loves to run with her now and I'm afraid Syd will run over her
Just take it slowly , even if it means they have to be in separate rooms for a long while ( our is 8 MO. old now , so it took a good 3 mo.)
I'm not sure if how we did it was right , but it worked for us