"I've seen this stray dog around town many times," Timchenko told The Dodo. "He always uses the crosswalk to cross the street. He's a very smart dog."
And as it turns out, he's very thoughtful, too.
As Timchenko looked on, the stray dog approached the patiently waiting pet and began to loosen the knot keeping him confined — and before long, he was free, led off (albeit reluctantly at first) to join the stray on some adventure.
Here's video of that remarkable moment: