Thats cool. Same as Scapper, Idgie's WOOWOOs are less of a rumbling growl as well, more of a higher pitched whining, howling woowoo. She usually does it when todays toy of choice has gone under the sofa, or the grasshopper she is chasing has hidden behind something.
We are getting 3 or 4 grasshoppers a day in the house the last few days - heaven for 'Miss Jack-hammer' but the one taking refuge in the cable modem is driving me crazy!!!!!
Tony