My question is concerning a cow that we have who is experiencing what seems to be some sort of paralysisor nervous system problem. She seems to be very healthy otherwise - her vitals are good, she's eating and her eyes are bright, but she cannot stand and hasn't been able to for about three days now. We have gone out and tried to get her up, but she can only stand for a moment before collapsing. She has movement in all of her limbs but not much control at all. She hasn't had any trauma that we know about, but she has recently had some vaccinations and she is in a pasture that has some lupin plants. Does this sound like anything familiar?