Maybe I should make it a mystery?

Blood everywhere!  A puddle by the gate in the school field fence, drips all the way home, more drips on the garage floor, a towel with smears, a jacket with spots...

No, I didn't commit a gruesome murder while walking the dogs--Oli, whom I'm dog-sitting, stuck his head through a gap under the fence into Stella's yard, and Stella objected to the point of removing the tip of his ear.

You wouldn't believe how much a dog's ear bleeds! And when you wash him off, he shakes himself and spatters go everywhere.

What if a bloody murder did occur in the neighbourhood--someone I know and have had words with--such as the guy who lives right next door to the gate? How long would it take the police to find out that it's canine blood, not human? They could see the split in Oli's ear, but I might have done that deliberately to provide a cover story.

Blood everywhere, the smell of blood lingering in the garage (yuck!)--can I turn it into a PLOT?