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This is Scientific Americans' 60-second science. I'm Steve Merski.

Want to make a dog? Well, wolves evolved into dogs at least once, but it turns out you can also make what's basically a dog by starting with wild foxes.

Select the ones that do not seem to want to tear the researchers face off and mate them to produce the next generation.

Within five or six generations of this selecting the calmest animals,

they had animals that were wagging their tails when Ludmila would approach them,

that were licking her hand when she put it into the cage.

University of Louisville evolutionary biologist Lee Dugotkin talking about Ludmila Trut

of the Institute of Cytology and Genetics in Siberia.

And this is strictly as a result of genetic selection. These animals are not trained to do this.

There's no mechanism in the experiment for them to learn anything. What you're looking at is the result of genetic

selection. Trutz started this fox domestication experiment in the late 1950s at the age of 25

and is still running it today. She and her team are approaching their 60th generation of foxes,

but they saw profound changes early on. Within five generations of selection, they had these

animals that were extraordinarily docile towards humans. And then, slowly but surely,

so many of the other traits that we see in domesticated

animals also began to appear in these tame foxes. They tend to have floppy ears and curly tails,

and they tend to have much more juvenileized facial characteristics. Truton Dugatkin are the co-authors

...