By Tom Gillespie @TomGillespie1
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Videographer / Director: Jonas Lundh
Producer: Tom Gillespie
Editor: Joshua Douglas
Jonas Lundh was out moose hunting in Költräsk lake, Sweden, when his father's dog Rocky found itself in deep water.
The four-year-old mongrel helps Jonas to track down the enormous animals and had given chase to one of them across a frozen lake.
Although the moose made it to the other side, Rocky wasn't as fortunate and began to struggle in the icy-cold water.
Jonas, from Boden in Sweden, has his dog tagged so that he can keep track of its movements whilst on a hunt.
The 26-year-old feared the worst when he saw the canine entering the water on his GPS.
After sprinting through the forest in panic, he arrived at the edge of the lake and saw Rocky floundering among sheets of ice.
Jonas said: "I heard Rocky make a strange bark, and I looked again at my GPS, and saw they were heading out into the water.
"That's when I knew I had to act really quickly.
"So I ran closer to the water, looked around me, and I saw the moose and dog out in the water.
"The moose was moving and after a while it was up on the island there, the dog was stuck in the ice, that was when I panicked.
"The only thing I had right there in my mind was that I couldn't watch him drown.
"It was so extremely cold that I could barely breathe, and my heart raced very fast. So I tried to focus on my breathing and head out to Rocky as soon as possible."
Brave Jonas filmed the incredible rescue with a GoPro camera, which shows him swimming through the freezing waters in a state of panic.
After scooping his beloved pet up in his arms, he was able to carry him to an island in the middle of the lake.
Jonas continued: "The swim out to Rocky felt very long, but I just tried to stay focussed on breathing during the way.
"When I got to him and grabbed him by the neck and lifted him up it was an amazing feeling when I knew he was going to survive.
"Then we walked up to the little island and I smashed my way though the ice so both me and the dog could make it up there.
"And then we started screaming for help, because I knew my father was not far away.
"But it took a while, so maybe 30 minutes on the island (in the) ice cold wasn't that funny, but we made it."
After screaming out for help, Jonas waded back though the water and back to the main land.
Despite his traumatic ordeal, Rocky, a cross between a Norwegian Elkhound and West Siberian Laika, swam back by his side.
Jonas made the incredible rescue on October 24, and says he will be hunting with Rocky again in future.