Sampson, a Shire horse gelding foaled in 1846 in Toddington Mills, Bedfordshire, England, is the tallest and heaviest horse ever recorded.
Sampson, owned by Thomas Cleaver, stood 21.2½ hands high (i.e. 7 ft 2½ in or 220 cm at his withers) by the time he was a four-year-old, when he was renamed Mammoth.
His peak weight was estimated at 3,360 lb (1,520 kg). He was gelded at approximately one and a half years old, and his testicles were already the size of softballs.
- ^ Whitaker The Horse p. 60
- ^ Encyclopedia of the Horse, Norris, Carlos R., 1998, p. 174.