Some Cats Purr More Than Others – Now We Know Why

For years, the easy explanation was that some cats simply had “more vocal” personalities than others. That is still partly true, but newer research suggests the difference is not just about mood, habit, or affection. Scientists now have evidence that a cat’s tendency to purr more may be linked to a specific genetic variation, which helps explain why two cats in similar homes can sound so different.

The newer picture is more interesting than a simple personality trait. Purring appears to be shaped by a mix of genetics, domestication, sex-linked behavior patterns, life history, and the cat’s own vocal anatomy. In other words, some cats may be biologically more inclined to purr often, while others may rely less on vocal communication in general.