I think, only JB, Ezbassr, and Centurion are old enough to remember this one; and if so for anyone, please keep it under your fedora for a few days
A detective broke into an apartment, found Harry and Grace lying on the floor, dead. Beside them was a small pool of water... and some fragments of broken glass. Above them, on a sofa looking down at them, was a pet cat, his back arched. The detective concluded, without further investigation, that the victims had died of strangulation.
How was this conclusion possible?