Passenger, Paul Brennan, 19, who catches the 331 to work, said: "I first noticed the cat a few weeks ago. At first I thought it had been accompanied by its owner but after the first stop it became quite clear he was on his own.
"He sat at the front of the bus, waited patiently for the next stop and then got off. It was was quite strange at first but now it just seems normal. I suppose he is the perfect passenger really – he sits quietly, minds his own business and then gets off."
(Via Sara Gran.)