Metro

Brooklyn pup is one lucky dog

She was this dog’s best friend.

A hero firefighter came to the rescue of a poor pooch overcome by smoke yesterday, performing CPR on the dog after it had been rescued from a burning Brooklyn house.

Daina Mielnik, 26, of Engine Co. 276, pulled out all the stops to render aid to DT, saving the toy terrier’s life after firefighters pulled him from a smoke-filled second-story apartment in Flatlands at around 10:30 a.m.

“It was barely breathing. I gave the dog oxygen. It’s my first animal rescue,” she said.

“It made me feel great. I love animals. Everyone hates to see an animal in pain.”

DT’s owner, Aiesha Cameron, and her four children were not at home at the time of the two-alarm blaze, but the dog was stuck in a cage in the East 35th Street apartment.

He was taken to Noah’s Ark animal clinic in critical condition, but doctors were optimistic he would pull through.

“He was brought in unconscious, but now he is responsive,” Dr. Brian Abraham said.

“We are monitoring him and trying to do what we can. I think he’s got a good chance.”

A fellow firefighter credited Mielnik’s quick work with helping bring a happy ending to the situation.

“Usually, they don’t make it,” the veteran said of pets trapped inside burning buildings.

Cameron said she was relieved.

“Everyone is alive. That’s all that matters. Even my dog. Thank you, Jesus,” she said.

Mielnik joined the department in 2005, a year after winning the women’s title in the White Castle Kingsboro Arm Wrestling Championship.

Her sister, Kinga, is also a firefighter, making them the only sisters in the department, and two of just 33 women on the FDNY payroll of over 11,000.

And, she asked The Post to point out, she’s single.

john.doyle@nypost.com