It's unlawful to take a pet from its rightful owner.
John finds a dog in his yard, and the dog has tags with the address and phone number of its owners.
John wants to find a home for the dog.
John returns the dog to its owners.
John decides to adopt the dog into his own home keeping the dog in the backyard.
The dog's owners allow John to visit the dog about once a week.
The neighbors spot the dog and alert its owner who threaten legal action against John.