i don't know what kind of cactus it is but it's in an ovule shape and about the size of my fist. anyway, there is something that comes out of the plant every now and then. it's white and soft like a small ball of fabric and there's a bunch of them. since it's an indoor plant, I'm wondering if i should carefully remove them with tweezers. i think maybe i should do that because if it was outside like most cacti than they would be naturally removed by the wind.