chasing kitty

hello! i so appreciate the encouragement on my last post about my sweet girl ginny. i have a young kitty, who’s been with me her whole life and is quite the princess. the dog chases her, often climbing on top of her and biting her. my puppy weighs a lot more than her – she is a petite cat. the puppy is playing, but i feel strongly that she could seriously injure my beloved cat. the cat often cries out in pain when the puppy is being rough. I yell at the puppy and she will back off for a moment, then go right back to tackling the cat. i don’t mind them playing, the cat often instigates it actually, but again it’s too rough. the cat does not use her claws or set firm-enough boundaries. i am tired of supervising a dangerous and never ending game – at this point they are never in the same space. it seems to get worse the more i separate them and i wonder if im making the cat seem like something special by doing so. My hope – once she is older and becomes a log on the couch – she won’t be so interested in hunting my cat. but at 5 months old it remains her favorite and most terrifying form of entertainment. i am open to any thoughts/suggestions!!