Police yesterday accused a man from the city's Arlington section of slicing open the chest of a dog left in his care by a roommate.

Shawn Lea returned to his home at 1903 Waite St. yesterday and found his dog, Hobbs, with a deep 12-inch gash in his chest, according to a statement from Animal Friends, a North Hills shelter where the dog is recovering.

Mr. Lea suspected that his roommate, Anthony Ansil, was responsible for the dog's injuries and called 911.

Pittsburgh police responded and contacted Katie Waters, a humane officer with Animal Friends.

Hobbs was unable to lie down and was having trouble standing, according to Jolene Miklas, spokeswoman for Animal Friends.

Police arrested Mr. Ansil and authorized Ms. Waters to transport Hobbs, a Lab-bloodhound mix, to Pittsburgh Veterinary Specialty and Emergency Center in Ohio Township.

Mr. Ansil described to police Officer Christine Luffey how he hit Hobbs with a board with nails in it and explained that he has a history of psychiatric problems, according to the statement from Animal Friends.

Ms. Miklas said Hobbs was prevented from going outdoors to relieve himself while in Mr. Ansil's care and that he struck Hobbs when the dog relieved itself inside the house.

After being stitched and bandaged, Hobbs was taken to Animal Friends and placed in a recovery room.

By yesterday afternoon he was up and about, often standing on his hind legs at the door to wag his tail and greet visitors.

Ms. Miklas said Hobbs was surrendered to Animal Friends by his owner and will be put up for adoption after he recovers.

"He'll be bandaged up like this for a while, but we'll be working hard to find him a loving home," she said. "With a gash like that he's a lucky, lucky dog."

Animal Friends staff were shocked to see Hobbs in high spirits yesterday considering the severity of his injuries.

"Everyone is surprised at how well he seems to be doing," Ms. Miklas said. "It just seems surprising how forgiving he is. Every single person he sees he gives a nice greeting to.

"When a man enters the room he's noticeably anxious, but as soon as he realizes that you don't want to hurt him he seems to calm down," she added.

Those interested in adopting Hobbs or any other of the dozens of cats and dogs at Animal Friends can call 412-847-7000.