Also little squeeky toys for dogs have little reeds like that inside. I ripped one apart after my dog tore a toy apart.
Getting it to squeek requires a technique that is very much like a blow bend on a harmonica. I couldn't help thinking that it would be a great training tool.
We never see you put harmonica in your hands, don't see what is in your hands during making sounds, and obvious hard edit as you remove hands from mouth so as not to see what's there. Will guess IF there is a harmonica in your hands it's not the only thing. Maybe part of a dogs toy. Or a squeaky thing from inside a child's stuffed animal.
I just played the video again and my dog all but broke his neck running down the hall, busting the door open, jumping up on the bed ... and then stopped, cocked his head and starred at the phone with a very puzzled look. Like"Hey, what gives, that's not my toy. "