Dog rescued from a well is still looking for its owner

[Catherine]

A Caucasion Shepherd dog was found trapped in a well. The local fire department was able to pull him out using fire hoses. He has been called Badger and he is under the RSPCA's care. He is doing well and he is a beautiful, gentle giant. Oddly they have been unable to find his owner. He is microchipped, but the chip is not registered.

https://www.bbc.com/news/articles/cd19lnelj79o

Someone must be missing Badger. I wonder why they have not come forward. Surely they didn't abandon him.
Maybe they were travelling and lost him or maybe he travelled a long way before  he fell in the well.
I want to think the best in this case. I hope the truth is not something sad or horrible.