No that's normal unspayed female behaviour - my girls are the same but loved up most of the time - it's only a problem if neither rabbit will accept the dominance behaviour of the other one - like today Zinneia was demanding a groom from Primrose, but Primrose doesn't groom any of them - she tried to be tactful by also sitting in the 'head down now groom me' position, and they both sat side by side, head to head waiting, then when Primrose ran off (probably forgot what she was doing :roll: ) Zinniea was outraged at her cheek and chased after her to tell her off - but nothing nasty, no fur pulled or biting, just a nip on the bum.