Connecticut Rescue Dog Saves Infant's Life

A family has their dog, Duke, to thank for saving their 9-week-old baby's life.
3:00 | 10/15/12

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Transcript for Connecticut Rescue Dog Saves Infant's Life
For a full list go goodmorningamerica.Com on yahoo!. Now the rescue dog, duke the lee roe. He saved the life of their 9-week-old baby girl. Dan harris with the story. Reporter: Duke was adopted from a shelter six years ago. A favor he's now repaid in spades. It happened last week when duke jumped on on the bed in the middle of the night, shaking uncontrollably. He is insanely obedient. This was extremely bizarre. Reporter: They knew something wasn't right. They went to check on their 9-week-old baby girl, harper. If duke hadn't been so scared, we would have gone to sleep. Reporter: When they found harper, she wasn't breathing. They are not sure what happened. My husband called 911. The balanambulance came because of our dukey dog who alerted us. Reporter: This is not the first time doggie instincts saved lives. Remember teddy the poodle? He ran over in the teenage male on the couch. Reporter: Or buddy who saved his owner from a fire and then from hungry bears. He chased off bears for me. Reporter: Now joining the line of hero, the unts stated duke. He's the perfect dog. Middle east meant to be ours. Reporter: An adorable poster dog for the cause of pet adoption. Save the life of an animal in need, and he or she may some day save yours. For "good morning america," dan harris, abc news, new york. Aw. That is fantastic.

This transcript has been automatically generated and may not be 100% accurate.

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