We bought them as two boys and took them to register at the vet. She said one was a girl but couldn't be sure till they had matured. They turned out to be one of each and he was neutered in December. The thing is we now have to keep them in two separate cages cause he keeps trying to hump her. They were bought as a pair cause we wanted to keep them in the same cage and I don't particularly want to have to witness or hear them copulatiing. They are house rabbits and I don't have the room to move their cages and put them somewhere else (and I'm worried they might fight).