Although she weighs in at a solid 900 kilogrammes, Emmi steps gracefully onto a small stage. The six-year-old cow knows her routine and climbs onto the wooden platform – a mere 60 centimetres wide – just as she has been trained to by her coach, Markus Holzmann. Holzmann, 21, is well-known in Bavaria and beyond, teaching tricks not only to Emmi but also an ox named Huge, horse Prinz and several other cows. He is so successful that he is now able to make a living as a cow trainer, with work taking him throughout Germany and Switzerland. Most of his clients are hobby farmers who want to learn abo…