When Patch hopped aboard the train to Dublin, the power of Twitter reunited the dog with his master.
Irish Rail sent a "Lost dog!" tweet with a photo attachment after the Jack Russell terrier arrived with Wednesday morning commuters on a train from neighboring Kilcock, County Kildare.
By all accounts, the friendly dog had spent his hour-long journey being petted vigorously.
After more than 500 retweets in just 32 minutes, the photo found Patch's owner, Deirdre Anglin, who tweeted the state railway: "That's my dog!"
Anglin and Irish Rail posted a series of photos documenting her reunion with Patch, their return train trip, and car journey home. She said fellow train travelers kept asking her: "Is that the dog from Twitter?"