Argo and his handler, Officer Brian Sturgeon, met with Police Chief Paco Balderrama after returning to work on Friday.
Police say Argo intervened to stop a suspect trying to escape, but the man stabbed him six times.
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He had surgery to repair the damage, but he's now showing veterinarians how well he's recovered.
"They were amazed at how he's done. He has bounced back, and I mean, you can see he's like nothing ever happened. He's probably just a little bit cooler with the shorter haircut," said Officer Sturgeon.
Argo is a two-year-old Belgian Malinois who's been with his handler for about 18 months.
He's trained in patrol and is learning how to detect explosives, too.