It was Pluto's lucky day.

After a 13-year-old Australian shepherd didn't return home as usual last week, the dog's owners frantically searched for the pup for two days. On the third day, the Shorr family found their missing dog stuck neck deep in mud near a stream in Willistown, Pennsylvania.

They immediately called for help and two responding police officers didn't hesitate to jump in the mud and get their hands dirty on May 9.

Sergeant Mike Martin and Patrol Officer Mike Kushner of the Willistown Township Police rescued the dog from the mud by using wooden boards to gain some footing near the pit. The officers then worked together to extricate the dog from the mud.

"We just knew we had to get the dog out of there. It was in distress. It wasn’t really moving a whole lot," Kushner told CBS Philadelphia. "I just pictured my own dog and what I would want somebody to do and that’s to go get it."

Once Pluto was freed, he appeared to be in bad shape. Authorities estimate that the 13-year-old dog was trapped in the mud pit for about 60 hours before he was spotted by his owners.

However, after a visit to the veterinarian, Pluto is on the mend.

"I always call him the wonder dog, now I know why," Pluto's owner Sheila Shorr told WPVI-TV.