This story was told to me by a coworker, whose daughter gave her a dog as a present, a very small and black - a rare breed. This one time, she was on the train with her dog and at on point, she needed to use the toilet, so she left her cabin just for one second - literally, for one second! The car was almost empty and she was the only person in her cabin. Needless to say, she closed the door - no way a little dog like that could disappear. But when she returned, the dog

seemed to have vanished into thin air. She scoured the whole cabin, but she didn’t find hide or hair of it. Suddenly, she noticed a small hole in the wall. What if her dog went into the adjacent compartment? She knocked on the door, but to no avail - it looked like it was empty. Then she called the guard for help, all the time crying "my little dog". The guard (and whose heart wouldn't waver?) unlocked the door with her key. Here, an amazing scene unfolds in front of them - there's roast chicken on the table - nothing out of the ordinary - and our dog - a little bit bigger than the chicken itself - gleefully feasting on it. And just across from them, a man who the chicken apparently belonged to, totally dumbfounded. 

"Can I take my dog, please?" - timidly asks the woman. 

The man seemed to recollect himself, turned his head and said, with terror in his eyes, "Is that a dog?!" 

Let's face it - he did have a point. Just think - you're having a drink and eating chicken, and this creeps out of the wall all of a sudden. 

By the way, the name of the breed is Brussel Griffon.