The Find Familiar spell can't be cast a second time, but what if a familiar is given another way, directly? And would anything get in the way of a non-magic-user having a familiar? Also I don't remember if a familiar can be brought back from death with another casting. Can it? In that case what would be the consequences of having another familiar already on board? Would the spell fail?
Actually I don't know what Beamdog has done to familiars, if anything. Never played with them in the new editions. I remember they could be used as mouthpieces for the caster, hopping about and talking to people, in the original BG2. Can they still do that? If so, then this is the only property of familiars I'm really interested in. I'd like to have it separately from the CON loss on death, extra hit points and what have you. I'd like to make a small creature that a party member, not necessarily the protagonist, could pick up in the wild and keep it as a friend/pet, send it out to talk to people, but without everything else familiars are burdened with. Is that possible?