my rabbits are fighting?

learning-to-live 616 is completely right. There's no guarantee these two rabbits will ever get along. I have a number of rabbits - actually they're mostly dwarfs too, which, after repeated attempts with a variety of different rabbits, have persisted in attacking every one! Some rabbits just prefer solitude. Yours may or may not accept the new one. That's the risk you take when you buy a second rabbit. If your male is not neutered, doing so will help, but if he is fully grown and mature, it may be too late to expect big results from that. Perhaps you can try putting them in cages next to each other without allowing contact and after a week or two or three, try again to put them together. Sometimes persistence pays off, but sometimes it doesn't. If I were you I would make plans of what you're going to do if they don't get along.

It may take time or they may never get along, but the good news is that rabbit generally enjoy the companionship of other rabbits and often form very strong bonds. However, they can seriously injure each other in fights if they are not yet "bonded" so extreme supervision and care is required. They cannot be housed together until you are sure they are getting along fine. Your older bun should be neutered before attempting anymore bonding, and the young one should be spayed or neutered as well when it reaches an appropriate age (4-6 months).

Here's a start on bonding procedures and tips: http://www.rabbit.org/faq/sections/introductions.h...

Hope it all works out!

i wouldnt put them together as rabbits are quite happy on their own any way and because your dwarf rabbit is fully grown he isnt going to except the baby one, he will just find it as a threat. if you wanted them together then they should have been put together at a younger age than 9 weeks old.