Earlier quoted context omitted.
> So we'd go out in the morning and my grandfather would call out "Jack" and the Dog would come running down the yard, and then next thing you'd see the crow hopping down the yard after the dog. Tangent: this is a handy effect, if you could get it to work, but it’s a bit surprising if it did work: animals have different audible frequency ranges, and, obviously, they’ll only respond to a name they can hear. Dogs and c…
> such that a name like “jack” wouldn’t even register to them My experience disagrees. I often have a back and forth "conversation" with my cat, and she clearly responds to my voice, which is not high pitched.
The cat may be responding to those discrete high frequency sounds, rather than your overall voice.