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Why do cats swallow meat in chunks instead of chewing it thoroughly?

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Cats do not chew their food thoroughly because they lack flat-crowned crushing teeth, which are necessary for grinding or chewing. Instead, their teeth are highly specialized for stabbing, anchoring, and cutting meat.1

The anatomy of a cat's jaw further dictates this behavior. The strong masseter muscles, which operate the lower jaw, restrict lateral movement, meaning the jaw primarily moves vertically. This allows the cat to hold prey in a viselike grip and use its carnassial molars to slice off pieces of meat. Consequently, cats swallow these pieces in relatively unchewed chunks, which are then broken down by strong enzymes and acids within their simple digestive tract.1