Male rabbits are known to be friendlier than female rabbits. There are behavioral differences in the breed of rabbit too. Holland Lops are known to be very friendly-the males especially. They are larger than other bunnies though can get up to 8 lbs! I have a Holland Lop and he is the sweetest thing ever! I have had a few family rabbits and i would say male is the the most friendly.
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Last summer, while jogging the trail around an urban lake near my home, I found a bunny, obviously someone's pet that had gotten loose: white, fuzzy, with spots. It looked naive and hungry, gnawing ditch weeds while fully exposed to whatever carnivore might pass by. And so I caught the rabbit, which took little in the way of effort since it was quite friendly. For the next two months, I tried in vain to find its owner. Apparently, whoever lost it didn't want it back.
Rabbits are small mammals in the family Leporidae of the order Lagomorpha along with the hare and the pika. Oryctolagus cuniculus includes the European rabbit species and its descendants, the world's breeds  of domestic rabbit. Sylvilagus includes 13 wild rabbit species, among them the 7 types of cottontail. The European rabbit, which has been introduced on every continent except Antarctica, is familiar throughout the world as a wild prey animal and as a domesticated form of livestock and pet.