The Good Samaritan chatted to the driver and agreed to take the four-year-old sausage dog to his home in Clacton.
Later that night his family spotted a Facebook appeal for the pet’s whereabouts and were able to arrange a reunion.
A relieved Michelle said: ‘I thought a bus driver would have noticed and not let him on but maybe he boarded when someone was paying.‘Luckily, there was a kind gentleman called Michael who offered to take him back to his own home in Clacton.
‘He took him in for the evening and was going to take him to the vet in the morning but his family spotted the post on Facebook. My partner Jonathan picked him up at about 7pm.’ Frank is now safe and sound with his best friends Charlie, a two-year-old sausage dog, and Freddie, his two-year-old human brother.
It pays to be a lap dog. Three dogs (from First Class cabins!) survived the sinking of the Titanic – two Pomeranians and one Pekingese.
Michelle added: ‘He is a valuable dog and you hear some horrible stories about situation like this. We were so lucky it was such a kind man who picked him up.
‘It is completely out of character for Frank. It is the first time he has done anything like this in his life.’