After several failed introductions between my existing rabbit, Black Velvet, and the newcomer, Tulip, they are finally getting along! They have been living side-by-side in their cages now for several weeks. Today, when I put them out in the exercise pen for the day, they actually snuggled up together to rest when they had exhausted themselves from running and hopping! I think that soon, they could be housed in the same cage! Definately not for some weeks, but eventually I think they could be.