am i in danger

Question
I have one rabbit wicth is a girl. My friend has the brother to my rabbit will she be danger if thay mate.help

Answer
Anytime animals breed, there is a risk involved, no matter how closely related they are or unrelated they are. The female could have birthing problems and die. The female could end up not being a good mother, and the babies could die. The babies could end up with genetic defects which will cause them problems. The last one is more likely in rabbits whose parents are closely related, though, so I would advise against letting them mate. If you go to a rabbit-knowledgeable vet, you can get them spayed and neutered.