Leon saw five highly poisonous snakes at the reptile sanctuary _ the boomslang, the Eastern tiger snake, the saw-scaled viper, the banded krait, and the king cobra.

The Eastern tiger snake

King cobra

The boomslang

The saw scaled viper

the banded krait

Explanation:

He saw five highly posinous snake according to their poison he saw The Eastern tiger snake

King cobra

The boomslang

The saw scaled viper

the banded krait

Snakes are more likely to be venomous than poisonous

Explanation:

Snakes are mostly venomous than they are poisonous

Venomous means that the snake will inject the poison into your body for the toxic effect to take place. Usually the venom is injected by using it's fangs. Poisonous is if the snake or the venom is ingested and this becomes toxic to the body. So, in actuality, none of these snakes are poisonous but they are indeed venomous and they rank from most to least here:

King cobra The boomslang The saw scaled viper The banded krait