Chance will go to a foster home after being treated for several issues. Copyright 2017 Scripps Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. PHOENIX - Police are investigating a serious case of animal neglect involving a dog who was surrendered to county officials. According to Maricopa County Animal Care and Control officials, the 2-year-old Lhasa Apso dog was brought to the shelter on Oct. 27. The dog was in such poor shape that staff couldn't determine the dog's breed or sex, but they could tell he needed medical care. A veterinarian reportedly "mercy groomed" the dog -- necessary grooming before actual medical attention is provided -- and noticed maggots around an injured leg. The veterinarian was shocked when the dog's back leg physically fell off the dog's body when more fur was removed from the area. Jose Santiago, spokesman for Maricopa County Animal Care and Control, says the dog was surrendered last week but didn't provide further details. best shock collar "Our veterinarian did say that she had never experienced anything like this before," Santiago said. MCACC says it appears the dog's leg had been rotting off from an injury the dog's owner may not have even known existed due to the lack of grooming. ABC15 spoke to the family who surrendered the dog and explained that they found the dog in poor condition. The woman, who only wanted to be identified as Ophelia, says the dog wandered into her backyard earlier this month. "I tried to cut his hair and he wouldn't let me; he tried to bite me," she explained.