Dogs suffer from jealousy which was first observed by Charles Darwin but has finally been proved by scientists.

Researchers found dogs exhibited jealous behaviour such as snapping and pushing when their owner displayed affection for a stuffed dog that barked, whined and wagged its tail.

The study monitored the reaction of 36 dogs as their owners ignored them in their homes, focusing instead on a stuffed dog or a bucket with a Halloween design. In a third scenario, owners were also asked to read aloud a pop-up book that played tunes.