The most we have had is 5, however, 3 of them at the time were my daughter's show bunnies...and two were pets. Until Saturday when my daughter's pet bunny passed away (illness), we had 4. We had two other beloved pet bunnies pass away last summer and one last fall (old age). We currently have a 7 month old baby Reeses...everyone loves him but he is 100% my bunny! Then we have a 4 1/2 month old, Funfetti and a 3 1/2 month old, Cheerios, who are family bunnies! We love them all and they are all spoiled bunnies! I would have 10! They are kind of like Lays potato chips, you can't have just one! Having had more, I think it is harder to give them all the attention that you would like to....with us, we also have a menagerie of other animals as well...so making sure everyone gets attention is tricky. However, the bunnies are just so much fun, they are in the house, in the living room and so they are never really hurting for attention. We have 2 horses, 3 Nigerian Dwarf goats, 12 chickens (who are 100% tame and all pets, LOL) 4 rats, a dog and a cat. I think when the dog and the cat are gone, they will be replaced with bunnies!!! I would rather have 10 bunny litter boxes than 1 cat box!!!! I am just bunny crazy, so I am really not much help!!! LOL