help!

my 5 month old basset is really rough with my cat (who is 1, been with me her whole life, and doesn’t know how to set firm boundaries). She climbs on top of and bites the cat. It’s playful but it’s too rough for my 10lbs cat. The cat isn’t scared, she actually instigates it, but cries out in pain a few minutes later and I have to come save her. They are never in the same space unless I am there to distract the dog. When she gets to the cat I yell at her loudly and she usually backs off but only for a second. It seems to be her favorite game. I wonder if im making the cat seem like something special by separating them so much. But I worry. My hope is that when puppy grows up a bit and is more lazy, she won’t feel like bothering kitty so much. Thoughts ? I grew up with a basset, we didn’t get her as a puppy but she really wasn’t interested in the cats.