Until 2009, it was considered a subspecies of Python molurus, but now is recognized as belonging to a distinct species. They are often found near water and are sometimes semi-aquatic, but can also be found in trees. Wild individuals average 3.7 m (12.1 ft) long, but have been known to reach 5.74 m (18.8 ft).he African rock python can generally be distinguished by its tighter pattern of markings, compared to the Burmese python, which has bolder patterns, similar to those seen on a giraffe. In the wild, Burmese pythons grow to 3.7 m (12 ft 2 in) on average, while specimens of more than 4 m (13 ft 1 in) are uncommon.
The brown tree snake (Boiga irregularis) was accidentally introduced to Guam in the late 1940s or early 1950s, probably from the Solomon Islands. Native to northeastern Australia, eastern Indonesia, and Melanesia, the brown tree snake has signiï¬ cantly damaged the economy and ecology of Guam.
True to its name, the brown snake is dark brown to grayish brown in color. It generally has a broad light stripe bordered by dark spots down the back. The belly is pink or buff colored, sometimes with rows of small black spots.