On Monday, a big dog attacked Izzy, a terrier mix, after the smaller dog wandered away from her backyard.
The big dog had Izzy in its mouth and had punctured her abdomen. That's when Sammy the cat sprang into action and saved Izzy's life.
"The big dog saw the cat, dropped Izzy, took off after the cat," veterinarian Kittsen McCumber said. "The family was able to pick up Izzy to bring her in here. The cat got away safely up a tree and literally saved this dog's life."
Izzy's medical team believes she will make a full recovery from her very serious injuries.
This story is from KTRK-TV's sister station KGO-TV in San Francisco.
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