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Naja is a genus of venomous elapid snakes commonly known as cobras (or "true cobras"). Members of the genus Naja are the most widespread and the most widely recognized as "true" cobras. Various species occur in regions throughout Africa, Southwest Asia, South Asia, and Southeast Asia.
The Chinese cobra is a highly venomous member of the true cobras (genus Naja). [14] The murine LD 50 values of its venom are 0.29 mg/kg IV [15] and 0.53 mg/kg [5] —0.67 mg/kg SC. [15] The average venom yield from a snake of this species kept at a snake farm was about 250.8 mg (80 mg dry weight).
The Egyptian cobra (Naja haje) is one of the most venomous species of snakes in North Africa, and has bitten many humans. It averages roughly 1.4 metres (4.6 ft) in length; the longest specimen recorded so far measured 2.59 metres (8.5 ft). [4]
The Caspian cobra (Naja oxiana), also called the persian cobra or Russian cobra, is a species of highly venomous snake in the family Elapidae. The species is endemic to Central Asia . First described by Karl Eichwald , a German physician, in 1831, it was for many years considered to be a subspecies of the Naja naja until genetic analysis ...
The forest cobra (Naja melanoleuca), also commonly called the black cobra and the black and white-lipped cobra, [4] is a species of highly venomous snake in the family Elapidae. The species is native to Africa , mostly the central and western parts of the continent. [ 5 ]
The monocled cobra (Naja kaouthia), also called monocellate cobra and Indian spitting cobra, is a venomous cobra species widespread across South and Southeast Asia and listed as Least Concern on the IUCN Red List.
Although venom toxicity values can vary greatly even among specimens of the same species, the Philippine cobra is considered to possess one of the more toxic venoms among the Naja (cobra) species. According to Tan et al., the murine LD 50 via the IV route for this species is 0.18 mg/kg (0.11-0.3 mg/kg). [10]
Naja nigricincta showing zebra-like stripes. Naja nigricincta is an oviparous venomous spitting cobra with dark brown to black body and zebra-like vertical whitish or light yellow stripes along the dorsal side. These stripes are generally evenly spaced and can be complete or fragmented.