BEIJING - A Chinese zoo ridiculed for disguising a dog as a lion has shut down temporarily for “rectification”, media reported Friday. The zoo’s supposed “African lion” was exposed as a fraud when the dog used as a substitute - a Tibetan Mastiff - started barking, the state-run Beijing Youth Daily had reported earlier. The zoo, in central China’s Henan province, has “altered several misnamed animal signs,” the Beijing Times reported, adding that zoo officials have issued a public apology and “closed for rectification”.