Robin Sillamäe, Rando Kartsepp and Erki Väli were doing dredging work on the Sindi dam when they found what they thought was a frozen dog stuck in the icy water.
The men rushed to clear a path for the dog to safely swim to shore. Once the animal was within reach, the men wrapped it in towels and rushed it to the vet.
The veterinarians noticed the animal had low blood pressure, explaining its obedient behavior. The "dog" was then treated for hypothermia and shock.
According to People magazine, "while the doctors were skeptical in believing the “dog” was just a domestic canine, it took a local hunter to reveal it was actually a wolf." The hunter was also able to determine that the wolf was just about a year old.
In order to make sure the wolf didn't return back to the wild while still recovering, the veterinarians placed him in a cage while he rested. Within a day the wolf regained it's strength and was released with a GPS collar back into it's natural habitat.
The Estonian Union for the Protection of Animals said; “We thank the heart of the young men who went to help this wild animal".