Update 11/2018: We improved snakeID.online, our page for easy snake identification. It's now much faster!

Boiga irregularis

Brown Tree Snake

Venomous 💀💀💀 Dangerous bite ref
Images automatically provided by Flickr & iNaturalist. Sporadic false assignment does occur.
  • Length Adult

  • up to 310 cm ref
  • Length Newborn

  • unknown
  • Reproduction

  • Unknown
  • Pupil Shape (when closed!)

  • slit (or elliptical) 
  • Fangs

  • fixed rear-fanged ref
  • Teeth/Fang Length


Subspecies & Common Names

Boiga irregularis  ENGLISH Brown Cat Eye Snake, Brown Cat Snake, Brown Tree Snake, Cat Snake, Cateyed Snake, Cateyed Tree Snake, Eastern Brown Tree Snake, Mangrove Snake, Night Tiger, Old World Cat Eye Snake, Tree Snake, FRENCH Serpent D'arbre, GERMAN Braune Baumschlange, Braune Nachtbaumnatter, Nachtbaumnatter, Trugnatter, ITALIAN Serpente Bruno Arboricolo ref

Full Taxonomy

  • I. Superfamily Colubroidea

  • Colubrids, elapids and vipers
  • II. Family Colubridae

  • Colubrids
  • III. Subfamily Colubrinae

  • Colubrids
  • IV. Genus Boiga

  • Cat snakes
  • V. Species Boiga irregularis

  • Brown tree snake
  • VI. snakeID

  • 1646
Look up complete taxonomic records of Boiga irregularis (including synonyms) at THE REPTILE DATABASE (by Peter Uetz et al).