Handout photos courtesy of Calgary, Alta. dog owner Scott McDowell show his injured Great Pyrenees Maximus which received stitches to close over a dozen wounds after it and another family dog were allegedly attacked by three pit-bulls in a southeast Calgary off-leash dog park on Dec 31, 2012. (Scott McDowell/Handout/QMI Agency)

CALGARY - Scott McDowell and his family are devastated and outraged after three pit bulls severely attacked two of their dogs, killing one and injuring his daughter at an off-leash park.

On Monday, McDowell's daughter Shanese Best, 13, and his son Johnathan McDowell, 14, took five-year-old Pomeranian, Patrick, four-year-old boxer, Leila and eight-month-old Great Pyrenees, Maximus, to an off-leash dog park near Millican-Ogden outdoor pool.

After the dogs barked back at three nearby pit bulls being walked by one man, they ran over to the canines, he said.