#4 Indian Red Scorpions
The Indian Red Scorpion is also called the Eastern Indian Scorpion and is the most lethal scorpion in the world. Contrary to its name, this can be found all over South Asia and not just India.
It hunts small lizards, rodents, cockroaches, and similar prey using its large and venomous stinger. It can kill a small child with its venom, and it can incapacitate adults with severe pain and affect the pulmonary and cardiovascular systems, often causing fluctuating blood pressure and heart rates.
Despite the danger of its venom, this also has large use in medical research, testing how its toxins could help with autoimmune conditions, cancer treatment, and other preventative medicine.