Jennifer Love Hewitt is embroiled in a custody battle over her dog with former fiance Ross McCall despite the couple’s amicable split last month.

The Ghost Whisperer actress is rumored to be resorting to dirty tricks to win the loyalties of boxer Mona.

“Jennifer is even attempting to change Mona’s name so that when Ross calls, the dog won’t come,” a source recently squealed to The New York Daily News.