Jamesons Mamba
Belonging to the family Elapidae, the Jamesons Mamba is a quick, highly arboreal, and very venomous snake. It’s location? Africa. If bitten and left untreated, death can occur within 30 to 120 minutes – yup, it’s that venomous.
Cascabel (Crotalus durissus)
You’re looking at South America’s most venomous pit viper species, the Crotalus durissus. It’s best recognized for the two distinct stripes that begin at the base of the head. Moreover its venom has neurotoxins (crotoxin and crotamine) which cause progressive paralysis cause that’s always nice.