Roy,

what I am betting what it was that you never saw, but heard, was a cougar....

there are several running loose up where you live....

Friend of mine, had me and a few other buddies spend a night or two on guard on a piece of property overnight up just past Riverbanks Rd there.

They had lost several llamas to a cougar...it was seen and shot one night sneaking in on the property....

a week later llamas started disappearing once again...

another one was taken out doing the same thing...

they found several 400 lb llama carcasses 50 ft or more up in a tree

There are a couple running loose on Bolt Mountain behind my house, as I've found tracks in the yard over the years, and also while hiking over on county land off of Stringer Gap...

Jerome Prairie School sent home notes with the kids several times when my son went to school there, that their had been cougar tracks and scatt found on the playground there...

I'd bet dollars to donuts that is what you heard....but never saw, that also caused your animals to go nuts...