Hi Stephanie, Fenway was an only dog for a few years and is not extremely great with other dogs. Before I brought Amelia home, I would go see her and hold her so my shirt was full of her scent. I put the shirt on his bed so he would smell it. Of course when I brought her home, he barked and barked. I sought the help of a trainer. I used the clicker. I have a large pen for Amelia because puppies don't run around unattended in the house. I would walk him around far from the pen at first but where he could see her. When ever he looked at her and did not barked I clicked and he got a treat. So he associated Amelia with good treats and praise. Gradually he got closer and closer. Them we progressed to walking Amelia on a leash and him loose so he could get away if he wanted. Amelia is very energetic oh yes and an alpha. Fenway I thought was an alpha but now not as sure. It took me working him every day. He accepted her,now if she is at a show he looks for her. He even sleeps by her crate at night. When I brought Classy home, I had no issue from Fenway. He accepted he right away. I am sure Tanz will accept Chex as well. You will have fun with the two of them. Good luck with your new fur baby.
I'll have to give both a try
