The splitjaw snake has been encountered at all times of the day, but it is primarily nocturnal. Most often the species is found on the ground, but it has been seen in vegetation up to 8 ft (2.5 m) above the ground. It is believed to shelter in humid burrows.
Because of the presence of rats and other introduced animals on the large island of Mauritius, it is unlikely that keel-scaled splitjaws will be reestablished there. Efforts are underway, however, to remove introduced species from the other small islands included in the original range of the splitjaw snake, and there are plans to reintroduce endemic animals and plants, including splitjaws, when the habitats are recovered sufficiently.
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