Funniest thing I've seen in a long time... it kinda reminds me of my last dog, Bear... he was a cross between a Chow and a retriever of some kind, and was a rather unusual looking big dog with a long coat, fringes hanging off his hind legs but not his fore legs, fringes hanging off his ears...
And when I had the TV on and there was a police chase scene, with the sirens blaring, Bear would go sit in the middle of the living room, ears erect, head cocked to one side... after a second you'd hear a tentative little howl from him, then he'd break into full voice, howling along with those sirens... I swear that dog had perfect pitch, and could mimic any siren he heard...
So naturally, being the playful individual I am, every time a police chase came on the TV, I'd make a point of jacking up the volume... it was particularly entertaining the night I watched The Blues Brothers, with that lengthy chase scene at the end... I'd laugh and laugh and laugh, and Bear would have a good ol' time, "singing"...
I love dogs... they don't have a lick of sense...