Scientists surprised by wolf puppies playing fetch - CNET - Broadlink Data Services, LLC.

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January 16, 2020

This wolf pup named flea was born in 2015 to a litter that wasn’t interested in playing fetch.

Christina Hansen Wheat

Fetch isn’t just for dogs. Some wolf puppies are down to play, too.

A team of researchers put 13 8-week-old wolf puppies from three different litters through a series of tests usually used to assess dog-puppy behavior. In an unforeseen twist, three of the pups were interested in playing fetch with a stranger, which included bringing a ball back when encouraged to.

The team published a study on the fetching phenomenon in the Cell Press journal iScience on Thursday.  

“The discovery comes as a surprise because it had been hypothesized that the cognitive abilities necessary to understand cues given by a human, such as those required for a game of fetch, arose in dogs only after humans domesticated them at least 15,000 years ago,” said Cell Press in a release on Thursday.

The fetching behavior snuck up on the researchers, since the first two wolf litters involved in the tests showed no interest in balls, which was in line with the researchers’ expectations for the young wolves. The third litter broke the mold.

“When I saw the first wolf puppy retrieving the ball I literally got goose bumps,” said Christina Hansen Wheat of Stockholm University, Sweden. She described the behavior as “unexpected.” 

Hansen Wheat tweeted a video of one of the pups in action.

The behavioral tests had a small sample size but suggest that the fetching interest may be a rare trait among wolf pups. This study is one result from a larger project in which researchers are hand-raising wolves and dogs and comparing their behaviors. 

The playful pups from the litter that fetched may give us hints about how some wolves became domesticated, and also about the possible origins of dog behaviors.   

The next time you go out to play fetch with your own dog, give a thought to the wolves that might’ve made the game possible.

Now playing: Watch this: Tracking the hidden lives of Denali’s wolves


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