While the planet Eden's atmosphere was capable of supporting humanoid lifeforms the planet was completely devoid of all animal life . All of the plant life , even the grass , was filled with acid , which resulted in severe burns upon touch . This made the world virtually uninhabitable to humanoid life .
Well to be honest mars isn't poisonous.
my planet
Uranus
No. The atmosphere is made of poisonous gasses, but the planet itself is rock.
Poisonous carbon monoxide gas has been found in the atmosphere of the dwarf planet Pluto
daddy long leg spider
There is only one snake mentioned in the Bible as living in the Garden of Eden - the clever serpent who seems not to have posed any physical danger to humans. Another way of looking at it is that if every species of animal that ever was, including every species of snake, was in the Garden, then there would have been some hundreds of different types of poisonous snakes in the Garden of Eden. But the real answer is, according to scholars, that the Garden of Eden was a purely mythical place. Mythical places can be free of unpleasant creatures if you want them to be.
Across the planet - there are approximately 400 venomous species.
I would think Saturn.
venus
every planet has air some are poisonous and some have bad gas
It is not because the rust on the planet makes the frozen water poisonous.