Reese Witherspoon and Jake Gyllenhaal's pets are making their life a misery. The couple, who have been dating for over a year after meeting on the set of 'Rendition', are being driven crazy because Reese's Bulldog and Jake's German Shepherd can't get along.

A source said: "The dogs are jealous of each other. They start barking and snapping at each other whenever Reese takes them for a walk."

Reese has now been forced to hire a dog trainer for her beloved mutt Frank Sinatra and Jake's pooch Atticus in the hope they will learn to live together harmoniously.

Jake moved into Reese's $5 million Los Angeles home earlier this year, fuelling rumours the pair are planning to wed.

A source said: "Marriage is definitely what they are working toward." Although they initially denied rumours they were an item, they eventually went public last October after they were seen enjoying a romantic weekend break in Rome.