The most poisonous ant in the world, according to the Guinness World Records, is the bulldog ant (Myrmecia pyriformis).
Their venom is incredibly potent and can be lethal to humans in rare cases, especially for those with allergies.

The bulldog ant (Myrmecia pyriformis) holds the title of the most poisonous ant in the world, as recognized by the Guinness World Records. Its venom is exceptionally potent and can pose a serious threat to humans, particularly those with allergies.

What a dangerous ant, he is a leopard for himself