We used to have a pigeon named Twinkle. She co-existed with our 2 dogs Tisoy and Epoy. When the latter passed away, we were given 2 puppies, Barbie the pekingese and Pipoy the pug. Again, Twinkle co-existed with the 2 puppies although at first, the puppies would be chasing Twinkle. And it only stopped when Twinkle got back at the 2 puppies. It's just sad that Twinkle left us after 5 years of staying inside our house.
We don't dare get another pet aside from a dog because Barbie is so ferocious. She's the youngest and only female so maybe she knows that she is our favorite that's why she bullies the 2 other dogs. I don't think Barbie would be amenable if we get another pet.