These changing quantities are called variables. A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled.
The Inland taipan (Oxyuranus microlepidotus) is considered the most venomous snake in the world with a murine LD50 value of 0.025 mg/kg SC. Ernst and Zug et al. 1996 list a value of 0.01 mg/kg SC, which makes it the most venomous snake in the world in their study too. They have an average venom yield of 44 mg.
The Belchers Sea Snake. The Belcher's Sea Snake is the deadliest and most venomous snake in the world. A snake that stretches over six feet, this snake's venom is about six times more powerful than that of the deadliest cobra. One bite and you will be done in about twenty minutes.