You are babysitting a rabbit that craps gold nuggets, do you keep it or return it?

An oddly dressed old woman approached you on the street, she asks you to hold on to her rabbit. She says she just had to move and would like you to keep the rabbit for 20 days until she gets settle in her new place and come back to take it off your hands. She says it will benefit you greatly if you babysat the rabbit. You take the rabbit home in its cage, you expect there will be rabbit pellets to clean from the cage but you do not find any, just tiny gold looking pellets about 70g in size. You bag some up and go to a jeweler or foundry and find out it is indeed 24k solid gold. The rabbit pushes about eight pellets a day. At the end of the 20 days when the woman comes back to reclaim the rabbit what would you do? Would you say the rabbit died and keep it, give it back, something else?