An unidentified man recently removed all his clothing, except his underwear, to rescue a dog stuck in a partially frozen pond in Simferopol, Crimea, Russia (video below).
The dog reportedly fell through the ice and was unable to paddle its way out. The temperature is believed to have been 23 degrees at the time, notes RT.com.
In the bone-chilling video, the man slides into the freezing water, swims over to the dog and herds the canine to shore in Gagarin Park. The man picks the dog up and carries the pooch out of the water.
In November, another shirtless unidentified Russian man pulled a dog out of some icy water.
Alexander Levashov was filming the dog while waiting for emergency personnel to arrive when the half-naked man ran to the ice water and tried to lift the dog out, reported Mashable. Reportedly, the scared pooch tried to bite his rescuer, who grabbed him by the scruff of the neck and hauled him out.
Levashov wrote on a Russian social media page that the emergency crew showed up soon after the rescue, and the dog was subsequently "rushed home," according to Mashable's translation of the posting.
Christopher McStay, an emergency room doctor in New York City, told Scientific American in 2009 about human survival in water at 41 degrees:
When you first go into extremely cold water there is this weird response called a cold shock response. People start to hyperventilate immediately. For one to three minutes you breathe very fast and deep, uncontrollably.
If you go underwater, you could swallow water and die. …I can't tell you how often this occurs but it's certainly a very real phenomenon. Once that response goes away, you're fine…for awhile.
Generally, a person can survive in 41-degree F (5-degree C) water for 10, 15 or 20 minutes before the muscles get weak, you lose coordination and strength, which happens because the blood moves away from the extremities and toward the center, or core, of the body.