This isn't exactly an AIBU because I know that I am, but I'd like to know why IABU!
We live in a cul-de-sac and one of our neighbours has cats. They are in everyone else's gardens all the time and they will come into the houses too if the doors aren't closed. Yesterday morning one of the cats left a dead mouse on my patio. Yuk!!!
So why is it my job to clear up this sort of thing? Why shouldn't the person who owns the cat do it?