Representative Cindi Berger says the Grammy Award-winning singer is "a huge dog lover, as her fans around the world know."
Carey has four Jack Russell terriers and often Tweets about their escapades. She featured one of the dogs in comic videos on YouTube.
Veterinarian Cindy Bressler said in a lawsuit filed Wednesday that Carey owes nearly $30,000 for care last year for three of the pooches, Cha-Cha, Dolomite and JJ.
Carey told fans via Twitter that Cha-Cha added a newcomer to the mix this month: a puppy named Jackie Lambchops.