Ah, so that's what you mean by Money Plant - this one's more commonly known as Devils Ivy or Pothos, but is, as you now say, Epipremnum aureum. It is on the list of plants toxic to rats, so again, I'd be very surprised if the damage has actually been caused by rats. That said, cut back the plant to remove badly damaged or unattractive areas - the odd hole in a leaf isn't much to worry about, but you can cut back to a leaf node, that is, cut the stem back to where there's a healthy leaf. If the growth is trailing over the ground, then you need to stand the plant on something so that doesn't happen.