Barbra Streisand -- Dog Attacks Flight Attendant

Barbra Streisand's female dog just got herself into serious trouble at 36,000 feet -- attacking a flight attendant aboard a billionaire's fancy private jet ... and it was so bad, the victim needed stitches.<br />The perp is a dog named Sammie -- Barbra's 12-year-old Coton de Tulear ... who accompanied Streisand on Tuesday during a flight from NYC to DC on a PJ owned by billionaire investor Ron Perelman.<br />TMZ reports ...