What's the weirdest thing your cat has brought in?

I think my cat was able to dig up a dead frogs bones because I saw a frogs skull in the house one day. At first I thought my cat had eaten the frog but then I noticed that there were remnants of soil around it. Another time my cat brought in another cat's kitten! This wasn't so weird but my cat literally catnapped some other cats baby! Since we did not know where she got the kitten, we couldn't return it so we just decided to adopt it. It could also be that the kitten wasn't catnapped. Of course, it could also be that the kitten was abandoned and my cat just saved it from dying on the streets.