So I guess I maxed out the household limit with six pets and two Sims. I can't move more Sims into the house, but I can bind ghosts to my household. I thought ghost Sims, since they take up a slot, co...
This may seem to be coming out of left field, but are any of the sims (humans or pets) in this household pregnant? That alters the total that can be added in, if so, since the not yet born sims also count.