Burmese pythons are dark-coloured snakes with many brown blotches, edged with black, down their back. It can grow up to 5 to 7 metres (16 to 23 ft) long, but some may only reach up to the length of 4 metres (13 feet). They usually weigh around 90 kg. The longest Burmese python ever recored was a female named "Baby" which lived in the Serpent Safari, Gurnee, Illinois and was 27 years old when she died. When "Baby" died she was 8.23 metres (27 ft) long, and weighed 183 kg