Absolutely nothing in last week's strips indicated that the moose Roger is crazily waving his denim jacket (HOW KEWL!!) at is "old." It doesn't have a grey beard, a cane, some needlework, or old war stories...it's just drinking water. Roger the Beak-eared gets what's coming to him then, when the "old" moose closes the distance between her and him instantly as the plot needs it.

The moose also happens to be a kind of reverse Kool-Aid Man. It could have ran away from Roger yelling "OH YEAH," much like KAM yells when he bursts through walls with pitchers full of his precious bodily fluids, but instead it runs toward Roger yelling "OH NO!" A moose this culturally in tune can't possibly be old.