We noticed recently that Jasper makes these cute little exhales through his nose when he's frustrated, kind of like a snorting bull -- and that he will do it on command, if we make the sound first and he can imitate us.
Here's some video from Jasper's second Thanksgiving ... held in the same location as his first, in nearby Northridge, CA at the home of PJ and Elena Donnelly.
They tore out an addition between our house and the landlord's house, opening up a little back patio where it will be great for Jasper to play (with supervision of course) once they finish the work. It's in good enough shape to do a little playing now -- especially when the friendly neighbor's cat is lurking ...