A British sanctuary is home to this massive DONKEY which is set become the biggest - in the WORLD.

The enormous young animal called Derrick is a staggering 16.3 Hands (5ft 7ins) tall - and is still growing.

Whopping Derrick is an American Mammoth Jackstock - the largest breed in the world.

The current record is held by Romulus in the Texas, USA, who measures 17 Hands - (5ft 8ins).

Derrick is now just an inch short but his owners say he will easily become a world record holder for biggest donkey.

The donkey lives at Radcliffe Donkey Sanctuary, Lincolnshire.

Sanctuary owner Tracy Garton said: "He was always big, he was big when he was born.

"He hasn't finished growing yet, they stop growing when they reach seven years old. So he still has a lot of time."

The 52-year-old said that despite his size, Derrick is a gentle giant: "Derrick is very very friendly.

"He's just like a big dog, follows you around all the time and wants to be by your side."

When Derrick stops growing, the sanctuary will call Guinness World Records.