An elderly man who lives in the Hong Kong high-rise where a horrific fire killed more than 120 people narrowly escaped the blaze — because his dog demanded a well-timed walk, he said.

Tsang, a retiree in his 70s, was returning from a stroll with his small-breed pup at around 3 p.m. Wednesday, when he spotted smoke rising from the Wang Fuk Court housing complex, where he lives with his wife and daughter.

“I saw a lot of smoke and flames. When I tried to go back upstairs, the firefighters had already blocked the way and were telling everyone to leave,” Tsang said, according to the South China Morning Post.

The raging inferno then ripped through the 32-story building, killing at least 128 people and hospitalizing more than 70 — in Hong Kong’s deadliest fire in decades, authorities

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