Schultz, the town’s police dog, is for sale. That’s because Police Chief Richard Billings decided last month to suspend the town’s K9 program when the only officer trained to work with a dog asked to be relieved of the duty because of family obligations. Hull started a K9 program in 2005 with Bac, another shepherd who is now retired and living with former canine officer Jon Mahoney. Schultz came to Hull as a puppy in October 2011, at a cost of $6,700, according to town accountant Marcia Bohinc. The canine program is funded through donations, she said. The account has a balance of about $2,000, and about half came from a single donor who has asked to be reimbursed, she said. She said other donors will be given the choice of getting a refund or transferring their gift to another town account.