The News Minute | November 18, 2014 | 08:58 pm IST "To err is human, to purr is feline"- Robert ByrneEver wondered why cats purr? Does it mean they are happy and contended or that they are frightened and scared? Those who love cats are likely to adore the purring noise the feline creatures make. For some it may be comforting, for others it might just be a form of communication with their pets. The purr — which is produced through intermittent signaling of the laryngeal and diaphragmatic muscles — is often interpreted as a sign of contentment, but the real reasons for this vocalization are a bit more complicated, states a report by Livescience. Read Livescience's full piece here: Why Do Cats Purr?An Imgur user recently uploaded several of illustrations titled Why Cats Purr by Rebecca Hawkes. The illustrations, may not exactly have a scientific explanation behind it, but are creative to the point that it urges one to use their imagination. Watch these illustrations and one can come up with their own version of why cats purr.