See: World longest snake 25 feet (captivity)

The longest snake - ever (captivity) is Medusa, a reticulated python (python reticulatus), and is owned by  Full Moon  Productions Inc.   in Kansas City, Missouri, USA. When measured on 12 October 2011, she was found to be 7.67 m (25 ft 2 in) long.

Medusa also holds the current
'Longest Snake - Living (captivity)' title. In Kansas City, Missouri, USA, those who look directly at Medusa may not do that but they certainly come to a stone cold stop.

That’s because the Medusa you find at the city’s Full Moon Productions isn’t some mythological figure of yore. 

It’s the longest snake ever in captivity. Medusa, a reticulated python, clocked in at 7.67 meters (25 ft, 2 inches) long in its official world record measurement, on October 12, 2011.

Reticulated pythons – named as such because of the grid-like pattern of its skin – are on average the world’s longest snakes, but adults normally grow an average of between 3-6 m (or, 10-20 ft).

But there is nothing normal about Medusa. The  10-year-old  snake required  15 men to hold her at full length in order  for  her.  

record measurement to be taken, and her diet consists of a combination of rabbits, hogs, and deer served biweekly.

She’s been known to eat a whole, 18-kg (40-lb) deer in one sitting. Medusa herself weighs 158.8 kg (350 lbs).