Cobras are a species of venomous snake that have specialized vertebrae that when extended, give them a "hood". Size and colorations vary from species to species.
cobra
corbra
Cobra
Most poisonous snake have fang.
No, the black rat snake is not poisonous.
The adder is also called a common viper.
the most poisonous is the beaked sea snake
The only venomous snake native to the UK is the Adder (Vipera berus).
rattle snake
a venomous snake
cottonmouth snake
Water Moccasins are a poisonous snake. A very aggressive snake as well.