This is a very interesting article. Interesting because I watched something like that too, though in my case it was a dog.
Going home, I generally have to pass several stops by bus. One day a dog got on the bus I was in, passed several stops, and thet got off it. The surprising this was that the dog seemed to realize clearly where it was going! As if it knew what stop to get off. Now I read nearly the same story about this cat. Wow! Emotion: smile

The orininal article Casper, which is 12 years old, boards the No3 service at 10.55am from outside his home in Plymouth, Devon, and travels the entire 11-mile route before returning home about an hour later.
On the route, the cat passes an historic dockyard and naval base, a city centre, several suburbs and the city's red light district.

He has been making the journey for so long that all First Bus drivers have now been told to look out for him to ensure he gets off at the right stop.

Susan Finden (corr), 65, a care worker who is Casper's owner, said: "Casper has always disappeared for hours at a time but I never understood where he was going.

"I called him Casper because he had a habit of vanishing like a ghost. But then some of the drivers told me he had been catching the bus.
"I couldn't believe it at first, but it explains a lot. He loves people and we have a bus stop right outside our house so that must be how he got started - just following everyone on.
"I used to catch the odd bus too so maybe he saw me and got curious what I was doing.
"Casper is quite quick for his age so he just hops on to the bus before the doors close. He catches the 10.55am service and likes to sit on the back seat."

Rob Stonehouse (corr), one of the drivers on the route, said: "He usually just curls up at the back of the bus. Sometimes he nips between people's legs but he never causes any trouble."
Casper has travelled an estimated 20,000 miles but Mrs Finden says because he is getting old the drivers often have to shuffle him off at the right stop.

A spokeswoman for First Bus said the firm has put a notice up in the office asking them to look after the non-paying passenger.

That's interesting. How do they know where to get off? And how do they count bus stops?? Does it mean animals can count?
Oh anon, I think those questions are still under debate.
Amazing, I read about this cat just about ten minutes ago and now I come here and see a thread about it. Whow! This is what I read though:
A cat has become such a well-known user of a Devon bus service that its drivers know where to let him off.
Casper has been queuing with other passengers to get the number three service from his home in Plymouth for months, bus company First said.
It added that he often sat in the queue and then quietly padded on board and curled up on a seat for the ride.
Casper's owner Susan Finden, 55, who picked him from a rescue home in 2002, said he had always been a free spirit.
Mrs Finden said she named her pet after Casper the Friendly Ghost, as he has a habit of wandering off.

I don't know what the attraction is but he loves big vehicles like lorries and buses

Owner Susan Finden

A spokesman for First said that drivers had been bussing Casper around for months, but Mrs Finden said she had only just found out about his use of public transport.
The care worker said: "He'd always go off and have a wander.
"Once I had to walk a mile-and-a-half with a cat basket to bring him back from a car park.
"He does love people, and I don't know what the attraction is but he loves big vehicles like lorries and buses."
A notice has been put up by First in the bus drivers' rest room in Plymouth bus station asking them to look after the rogue passenger if they spot him sneaking on board.

Source: BBC news (there's also Casper's video on that page!)