Lending further evidence that Barley's instantaneous assessment of a possible animal is based on their silhouette, she immediately recognized at a distance that this Halloween inflatable was cat shaped and advanced with all due enthusiasm. As she approached, she slowed, and eventually froze, her tail lowering slightly and her fur raising. She did not growl, nor did she take her eyes off the monstrous feline. After a few moments (and managing to snap a picture), I told Barley that it was OK, and she glanced back at me very quickly before locking back in on the inflatable. Only with my cajoling did she made very cautious steps toward it. Only when she skirted around it and sniffed at its haunches did she seem to realize that it wasn't a beast at all. That, in some sense, it wasn't "real." Still, as we walked away, she glanced back, as if worried it might pursue us.
Happy Halloween, everyone.