I usually side with the original owner when a lost dog has it's owner found. BUT this swayed me to say the people who found the dog should keep it:
The office launched an investigation after Briggs’ attorney, Geordie Duckler, made allegations that Hanson-Fleming had abused the dog when he had it. Duckler sent a release to media outlets on Friday claiming that Hanson-Fleming physically abused his dog, left it in a small cage and kept it in an unclean environment.
You abuse, you lose. No dog deserves to be abused. Period.