We just lost our precious little girl on Easter. She was 12. Last week we brought a new puppy home. Holly our 3 year old is not aggressive however she outweighs the puppy by about 25 lbs. The puppy, Mika, will launch herself when she wants to play and sometimes the play turns into a chase. I’m so afraid that rough play is going to hurt Mika. Should they be kept from playing together until Mika gets bigger. Right now she is only 9 weeks old and about 8 lbs. I don’t think Holly would intentionally hurt her but I don’t want to take the chance. Any advice or past experiences greatly appreciated.