Hello I have had two mini lops for four weeks who were sold to me by a breeder as male brothers. They have had their mixi vaccinations at the vets and he checked the sex of one of them but forgot to do the other and said he would ckeck when I visit again next week. Its just I have noticed them mounting each other - is this normal? Also reading some threads I am concerned they wont get on once they are older, they are 13 weeks at the moment. The breeder assured me she often sold male pairs and I took her at her word.