Just keep your horse walking.
You flip the rabbit over spread the back legs and move the tail, and hair. If you see tesacles it is a male if you don't it is a female
I have a couple lionheads before. They are very easy to take care of . All you have to do is basically what you do with all animals.. Comb out their mane more often though
They are two different breeds. The Holland lop has bigger ears and the mini lop has smaller.