A police dog was injured in the line of duty yesterday, police officials said.

The 3-year-old German shepherd, Ranger, sliced his leg badly on a large piece of glass while on a search for a man suspected of violating his parole. The search was conducted at about 11:45 a.m. in a rundown basement apartment at 1073 Bedford Ave. in the Bedford-Stuyvesant section of Brooklyn, police officials said.

Ranger immediately located the man, who wasn’t identified by police, under a bed, but a piece of broken mirror severed a major vein and ligament in his left foreleg. His partner, Officer Neal Campbell, and another officer wrapped Ranger’s leg and rushed him to the Animal Medical Center on 62nd Street in Manhattan.

The veterinarian who performed three hours of surgery on Ranger, Jason Fusco, said the dog would be able to return home on Saturday with a splint on his leg. After a month’s time, veterinarians will evaluate whether he can work again as a police dog, he said.

“Despite that everything was severed and it was even before he had pain meds, he was incredibly nice,” Dr. Fusco said. “But he was a little confused, like, ‘Why am I being carried in with the people?'”

A spokesman for the Animal Medical Center, Michael Shepley, said Ranger was bleeding profusely when brought to the hospital.

Dogs that retire from the police department are often adopted as personal pets by their partners, an NYPD spokesman, Officer Martin Speechley, said.