Wolf did the same thing as the rest of the kids mentioned. It was this frantic DEATH phase that lasted for nearly a year I think. There was a lot of talk about Mormor's pets who died and what happens when we die, etc... I read up on it and it's a common phase, but it is creepy none-the-less.
He's almost 5 now and it's calmed down a lot, but recently he was telling everyone our cat is going to die soon. The cat has diabetes and is 13 years old, but he is certainly not going to die soon!!! In his mind several years is still "soon." And of course the dramatic deaths at the business end of a sword or gun haven't lessened...