Dog The Bounty Hunter Diagnosed With Life-Threatening Heart Condition

Dog The Bounty Hunter has been diagnosed with a life-threatening heart condition … only 3 months after his wife Beth Chapman lost her battle with cancer.

Dog makes the stunning revelation on an upcoming episode of “The Dr. Oz Show” … revealing he’s been diagnosed with a pulmonary embolism.

In the clip, Dr. Oz tells Dog he’s a “ticking time bomb” before offering this sobering message … “You’re not going to be here with the heart the way it is right now.”

Dog says he learned of the scary diagnosis after he was rushed to the hospital a week and a half ago with chest pains.

It’s not totally bleak for Dog … he says he’s on the road to recovery.

We broke the story … Dog’s family wanted him to make major lifestyle changes after the heart scare, and it seems like he heard their message loud and…