A small quantity of beer may or may not be involved.
Perhaps the neighbors have a live mariachi band playing across the road.
Everyone knows that chihuahuas love mariachi music and that some of them even like to sing along.
Our little Bertie Pierre is no exception.
Sometimes people make little videos that should only be shown to understanding family members, some of whom will shrug and roll their eyes; and some of whom will howl and sing along.
This is one of those videos. Please don't look. I'm warning you.
That disembodied and demanding voice belongs to the director of this little production, who gets very tense behind the camera.
And yes, it turns out that YouTube is just full of chihuahuas singing mariachi. I'd suggest you spend an idle summer afternoon looking at some of them.
You must check out the complete Adventures of Bertie Pierre.