It’s a dog! It’s a train! It’s the head of a dog superimposed on the body of a train! You may have recently seen a mutant creature chugging through your feed, a hybrid beast, like a centaur or sphinx, uniting the head of a dog and the body of a train. There is really not much more to say about Train Dog except that it is, as one viral X post suggested , very, very fake, and very, very real—and if you haven’t seen it yet, you definitely should. The initial joy of the thing is visual: dog head,