Green Cat Snake ( Boiga cyanea Duméril, Bibron & Duméril, 1854 )

  • Sharebar
Scientific Name: 
Boiga cyanea (Duméril, Bibron & Duméril, 1854)
Body Shot
In India its distribution is whole of North-east region's moderate to high elevations up to 6890ft.
Venom Type: 
Characteristics for identification: 

It can be easily identified by checking moderately thin body, green color of dorsal, head like other cat snakes. In juveniles its coloration is reddish-brown except head which is of green color. 


Hatching- 35cm.
Average length- 120cm.
Maximum length- Male: 177cm, Female: 187cm.

Dorsal -
Laterally flattened long body. Scales smooth, long shaped and obliquely arranged. Top dosral scales along the vertebra larger than side scales and of hexagonal shape. Dorsal color uniform green or green mixed with grayish or bluish. In juveniles up to 9-10 month age bear green color head while rest of dorsal body reddish-brown or ochre. Interscale color black, also head and few dorsal scales edged with the same color.

Ventral -
Belly color greenish or yellowish white. Subcaudal scales paired in zig-zag manner.

Head -
Head triangular with rounded edge; clearly broader than neck. Top of the head usually similar to dorsal color or sometimes of brownish tint. Upper lip color yellowish; most of head scaled margined with black. Eyes large of gray color, with vertically elliptical pupil.

Tail -
Long and thin tail typically like other arboreal snakes with pointed tip.

Supralabial 8 or 9 (rarely 7); 3rd to 5th or 4th to 6th in contact with eyes; loreal 1; preocular 1, reaches to upper surface of head; postocular 2 or 3; temporal 2+3
Smooth scales in 21/23: 21: 15/17 oblique rows; vertebrals enlarged.
231-258, with slight lateral keel; anal undivided.
Sub Caudal: 
118-158; paired.
Lives in wide range of elevations up to 7000ft. Found in variety of forests including evergreen, semi evergreen, moist deciduous etc. Choose dense plantation for activity and roosting. Hides in tree holes and dense vegetation.
Natural History: 
Nocturnal and arboreal. Shows activity in low to high bushes. Behavior shy, elusive and usually non-offensive. On threatening throws much of fore body into loops, open its mouth to show black oral cavity to look fascinating. Produce hissing sound occasionally. Gives mock attacks or chew bite on approaching closer. Reproduction oviparous, female lays up to 10 eggs from late winters to late summers.
Feeds mainly on lizards. Also takes frogs, birds, rodents and other snakes.
Authors & Contributors: