I also posted this on the referenced thread.
At least Clarkston is not a big city. Not too long ago the Seattle Police were chasing a bear in north Seattle. Finally cornered it just north of the University a little ways, just a few miles from downtown.
They had been trying to catch it all the way from Ballard eastward, primarily along the Burke-Gilman trail. They called out the zoo people to trank it and take it away.
In the past 10 years or so, there have been two full grown cougars and a full grown black bear all within a few miles to the north of downtown Seattle, surrounded by miles of developed land, homes and a couple of million people.
The zoo experts feel that the cougars wandered in, possibly over the floating bridge at night. The bear in Ballard and then later in Laurelhurst, was felt of have probably come in on a train. Evidently, according to the bear experts, bears have been known to climb on trains (maybe an open boxcar looks like a cave?), ride on the train and then get off when it slows down far enough or stops. What a thrill that would give some hobo, hop on a freight and find yourself sharing a car with a full grown black bear, who is probably not very happy.
The bear was a mule!
It's surprising they found a grow and not a meth lab. Clarkston is meth central.