A dog killed its owner during an attack on the deck of the woman's Upper Macungie Township home, police said.
Police were called to the home along Spring White Drive Thursday afternoon by neighbors who reported hearing screaming and a dog barking.
The dog, a 3 ½ year-old Boxer-Pit bull mix, was still attacking the woman when officers arrived, police said. They managed to put the dog in the home so responders could treat the woman's severe injuries.
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She was taken to Lehigh Valley Hospital Center hospital where she later died.
The name of the woman, who was in her 30s, is being withheld until family members are notified.
Police say the dog was tranquilized on the scene and taken to the Lehigh County Humane Society where it will be euthanized.