Cat owners may have suspected as much, but it seems our feline friends have found a way to manipulate us humans.

Researchers at the University of Sussex have discovered that cats use a "soliciting purr" to overpower their owners and garner attention and food.

Unlike regular purring, this sound incorporates a "cry", with a similar frequency to a human baby's.

The team said cats have "tapped into" a human bias - producing a sound that humans find very difficult to ignore.