The tallest living horse, Big Jake :

At 210.2 cm (82.75"), 11-year-old Belgian gelding Big Jake stands as the world's tallest horse. There's a lot of accommodation to be made for such a large animal. Everything has to be big! His stall is 20X20 feet when an average stall is about 12X12 feet. While there's a lot of food that could fit in that stall, Big Jake is on a strictly healthy diet, consuming 1 1/2 bales of hay and 40 quarts of oats per day.
         "We are proud to hold the record and enjoy the people who visit the farm," said Jerry, Jake's owner. "We enjoy the reactions and when people leave our farm happy from the experience of seeing Jake."

Photo Credits : Source1, Source2