*Mariah Carey has reportedly brought her dogs to a pet psychologist to prepare them for the arrival of her twins this year.

The singer, currently expecting her first children with husband Nick Cannon, is so worried about the psychological impact their birth will have on the couple’s four Jack Russell terriers – JJ, Cha-Cha, Dolomite and Jackie Lambchops that she has taken steps to make sure the dogs are mentally and emotionally prepared, according to WENN.

An expert on Jack Russells said they “can be jealous and possessive about their owners.”

On their first wedding anniversary in April 2009, Nick presented to Mariah – who already had the dog JJ – her second pooch – a baby Jack Russell terrier they named Cha-Cha, who later gave birth to the couple’s third puppy Dolomite.

Jackie Lambchops, the latest addition to the family was born in June last year.