For those who live in California, at night there are what sounds to be "frogs" croaking in the distant fields and meadows. One time one of these "frogs" Cme into my quarters. I heard the croaking sound but could not find anything. Yet, within the next couple of days my cats were watching something moving down the driveway because of all of them were looking in unison at an invisible thing, which started to croak when it got under some rocks. I am wondering.................?

........wayne