We have a deaf cat who apparently can still hear some high tones.
So I was wondering if a dog whistle might aid communication.
Then I wondered if there was a dog whistle app for a mobile phone.
There do seem to be tone generator apps; has anyone tried one of these?
Those of a certain advanced age and degraded TV watching habits may perhaps remember Bruce Forsyth and The Generation Game and "HERE KITTY KITTY".
Technology moves on (I hope).
Cheers
Dave R