This usually happens when it's sniffing the urine of a cat that's in season or where a tom has sprayed. It gives cats a great deal of information about that scent as it enables it to draw in the air over a special organ called Jacobson's organ found in the roof of the mouth behind the front teeth.

Why do cats bow when they see you?

That means she's feeling scared. Has a cat ever rubbed his head against you? He was showing affection! When cats stretch, they're saying they feel comfortable and relaxed.

Why do cats gather in a circle?

Some theories suggest that cats sit in a circle to give themselves a sense of security. Perhaps they feel it is a territory they can protect. Another theory puts forward that if humans pay a great deal of attention to the circle, cats feel the need to discover what's so fascinating about it.