It might sound strange but pop star Mariah Carey's pet dog ‘Jack', who has appeared in many of her music albums, has become an international star with a string of fan clubs springing up in his honour.

"He's such a star! He's been in my videos and has built up his own fan base", ratethemusic.com quoted Carey as saying.

"He has websites dedicated to him - one in Japan, one in the US", she added.