Cats seem to have a special knack for sniffing out the one person in a room that is either allergic or just not very keen on the feline persuasion. I've witnessed this unique law of attraction myself (I am admittedly not a huge cat person), and have often wondered how they "know."
The reason, it seems, is linked to another common cat behavior. When cats discover a new piece of furniture or enter a room for the first time, they will brush along the walls and go up, down, around, behind and underneath everything in sight. While the uninitiated might interpret this in-depth maneuvering as mere curiosity, the cat is actually marking its territory.
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