- Who
- Unknown
- What
- 1524 metre(s)
- Where
- ()
The tallest and heaviest documented horse was the shire gelding Sampson (later renamed Mammoth), bred by Thomas Cleaver of Toddington Mills, Bedfordshire, UK. This horse, foaled 1846, measured 21.2½ hands, 2.19 m (7 ft 2.5 in) in 1850 and was later said to have weighed 1,524 kg (3,359 lb).
