Last Friday, 53 year old Florida Keys resident Greg LeNoir saved his dog Jake from being devoured by a shark by jumping into the water and punching the predator.

The incident happened when LeNoir and Jake visited the Worldwide Sportsman’s Bayside Marina pier in Islamorada and Jake jumped into the water for his daily swim. According to LeNoir, Jake is a fast and fearless swimmer who loves to retrieve soaked coconuts and jellyfish. But this day, the playful swimming session took a turn for the worse when a five-foot (1.5 m) long shark showed up and chomped its teeth into the 14-pound (6.3 kg) rat terrier.

As LeNoir watched his dog suddenly disappear under the surface, he didn’t hesitate to come to his rescue. ”I clenched my fists and dove straight in with all my strength, like a battering ram,” says LeNoir. ”I hit the back of the shark’s neck. It was like hitting concrete.”

While being pounded by LeNoir, the shark decided to let go of Jake, who frantically swam back to the shore, leaving a red trail of blood behind him in the water. Jake was rushed to the VCA Upper Keys Animal Hospital in Islamorada, where his wounds were attended by veterinarian Suzanne Sigel and emergency on-call assistant Callie Cottrell. The sharp teeth of the shark had punctured Jake’s skin and some muscle, and skin was hanging like ribbons from his right side and front left leg, but he wasn’t in critical condition.

”He looks great and is recuperating well,” Sigel said on Monday. ”I was worried he may have inhaled salt water when he was pulled under, but there’s no evidence of infection or pneumonia.”

The hungry shark has not been identified, but LeNoir believes it to be a bull shark or lemon shark. Sharks are not uncommon in these waters, partly because the Islamorada Fish Company has an open saltwater pool which attracts large tarpon – a yummy treat for many species of shark.