rabbits may be pregnant

Question
I brughta rabbit i thought was a girl but recently found out it was a boy but i have 3 girl rabbits he is a lion hean then i have to netherland and one lop but i think he may have impreganated the lop and one of the netherland and i am not sure is this going put the fermale rabbits life at risk as they are different breeds  

Answer
They should be fine. Lionheads are not so large as to cause a problem breeding with the small breed females you have. However, do make sure he is seperated so they do not end up getting pregnant with a second litter at the same time as the first. That can cause complications.