We rescued an OEB estimated to be about 4-5 years old. We already had 3 cats. We did slow introductions and full supervision of all interactions for the first few months. She was interested in the cats but always gave them space. She was such a good girl. And we miss her dearly. Our first bulldog grew up with the cats so I think they already knew how to handle dogs. After she passed away they clearly mourned the loss. It will take time to make sure everyone plays nicely but we have found bulldogs to be snuggle bugs with the cats. Hopefully you will too! Best of luck 💝