Eclipse didn't always hit the road alone. Her owner, Jeff Young, told local news outlet Komo 4 that they used to go to the dog park together. But Eclipse didn't like waiting for Young to finish his cigarettes before getting on the bus, so she started leaving without him.
"We get separated," Young said, "She gets on the bus without me, and I catch up with her at the dog park."
According to this report, bus conductors and passengers alike are just tickled by Eclipse's independance. She's incredibly intelligent and well-behaved, and sits through the ride "just like a person does," according to one commuter.