Assuming you meant front or rear fanged, they have two long fangs at the front of the mouth, that are hinged and fold back when not in use.
Kraits are apart of the group Elapidae (elapids) which include other neurotoxic snakes such as Cobras and Coral Snakes. This group is separate from the other main group of venomous snakes, Viperidea (vipers), which include Rattlesnakes and Puff Adders. That being said, there are many differences between elapids and vipers. Elapids are generally long, slender snakes with small, fixed front fangs. Vipers on the other hand are usually stout-bodied with a triangular lance-like head that have long, hinged front fangs . Also, elapids possess neurotoxic venom while vipers have hemotoxic venom (in come cases have a blend of both as seen in Neo-tropical Rattlesnakes)
Vipers refer to venomous snakes that are able to sense heat using two special sense organs located in front of their eyes. There are many different species of viper. Although they are very widespread globally, no vipers live in Australia.
Cobras are apart of the group Elapidae (elapids) which include other neurotoxic snakes such as Kraits and Coral Snakes. This group is separate from the other main group of venomous snakes, Viperidea (vipers), which include Rattlesnakes and Puff Adders. That being said, there are many differences between elapids and vipers. Elapids are generally long, slender snakes with small, fixed front fangs. Vipers on the other hand are usually stout-bodied with a triangular lance-like head that have long, hinged front fangs. Also, elapids possess neurotoxic venom while vipers have hemotoxic venom (in come cases a viper can have a blend of both as seen in Neo-tropical Rattlesnakes)
The three types of snake fangs are solenoglyphous (hollow fangs at the front of the mouth, characteristic of vipers), proteroglyphous (short, fixed fangs at the front of the mouth, seen in elapids like cobras), and aglyphous (lack specialized fangs, common in non-venomous snakes).
All Vipers are known for the two venomous fangs in the front of the mouth. Most Vipers are short, stocky snakes and have broad heads to allow them to consume their prey. All vipers' coloration tends to be camouflage to their environment.
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