The most dangerous country is Australia for its venomous snakes and spiders.
Most of Australia is composed of semi-desert and desert regions, and therefore it is not very surprising to find all these venomous reptiles there. The same is the case with the other semi-desert regions, such as the Mojave desert of the US, Kalahari desert of Botswana and Sahara desert of North Africa.
In every country there are poisonous animals, insects and plants. Just need to know about it and not forget about safety precautions. Now the climate changes a little and many animals and insects live further North than we lived before. This is a danger for those who are not ready.
I agree with you. In a foreign country, you can poison yourself even with the water that local people eat. The human body gets used to certain conditions. And a change in the environment has a negative effect on the body.