Movie star Jeremy Renner has offered a $5,000 (£3,300) reward for the return of his missing French bulldog. The Avengers star's beloved Hemi disappeared near popular Los Angeles hiking trail Runyon Canyon on 19 July (13), and now the actor has launched a Facebook.com campaign to try and track down the pooch. Renner has posted a flyer that reads "5,000 Reward, Lost Dog" on the HemiMissingFrenchie Facebook page, which he created last week (24Jul13). The poster lists identifying details about the "very friendly" puppy, who he reveals is in need of medication for a hip condition. The new dad lost a French bulldog called Franklin last year (12) when the pet suffered a heart attack and died while Renner's friend was looking after him.