The term 'Lost Pet' can be summarized by the crossword solution 'STRAY'. A STRAY pet is an animal that has been separated from its owner and is now living on its own. STRAY pets are often found wandering around neighborhoods, parks, or other public areas. They may have been abandoned, escaped, or simply gotten lost. STRAY pets can be taken in by animal shelters or rescue organizations, where they can be cared for until they are reunited with their owners or adopted into a new home.