Never pay down a deposit in a bank account until you have met the seller, seen signed a purchase agreement.
No serious private advertisers ask for a down payment before you meet.
Receiving an email with an in-scanned ID does not mean that you have identified the sender. You do this on the spot, when you sign a purchase agreement.
BREED- Border Collie Mix; SEX-Male; SIZE-Medium at Adulthood; WEIGHT-10 lbs. currently; AGE-Approximately 4 Months; SPAY/NEUTER-No, Too Young At This Time;...