The woman attacked sustained several bites all over her body including her arm, head, hips, knees and buttocks.
"I want to thank the neighbor who came out to help me," she said in a statement. "It could have been much worse if he didn't help."
The woman was on her route in the 4500 block of 34th Avenue near Tennyson Street in northwest Denver on Monday morning when it happened.
The dogs got out of a fenced-in yard and knocked the carrier to the ground. Authorities say she was bitten in the arm and head.
"They cornered the carrier, got her down on the ground and she sustained some pretty serious injuries," David Rupert, spokesman for the U.S. Postal Service in Colorado, said. "It was a very serious attack."
A neighbor was also bitten while trying to help the woman.
"A neighbor heard the commotion, came out and stopped the attack with his fists, breaking a hand," Rupert said.
Both dogs were taken in by animal control.
The owner has also signed the dogs over to the city. Once the quarantine period is over, the dogs will be euthanized. The owners told 9NEWS their thoughts and prayers are with the postal carrier.
"Immediately we'll go to that owner and tell them to restrain their animal," Rupert said. "They might not like it, but we don't deliver the mail until the animal is restrained."
According to the Centers for Disease Control and Prevention, Denver ranks eighth in the nation for dog bites on postal workers; 35 mail carriers were bitten last year.
"We have several attacks every single month. Fortunately, most of them are not that serious," Rupert said. "It could have happened to anyone."
"This is a good carrier who happened to be at the wrong door at the wrong time," Rupert said.
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