Hi, I am new member

Thanks for welcoming!
Hopefully, everyone will be doing well. I am facing some issues with my lovely Dachshund since
I bring a Cavachon dog at my home. Both don't like each other. Even though Dachshund is with
me since last 5 years and I also bring a Cavachon from one of the best Cavachon breeders. Still,
facing the problems. What do you guys think where can be the issue?