Responsible for transmitting deadly diseases such as malaria, dengue fever, and Zika virus, mosquitoes are among the most lethal creatures on Earth due to the sheer number of deaths they cause each year.
Certain species of snakes, such as the saw-scaled viper and the black mamba, are highly venomous and can deliver fatal bites to humans and other animals.
Found in sub-Saharan Africa, tsetse flies transmit trypanosomiasis, also known as sleeping sickness, which can be fatal if left untreated.
Known for their potent venom and nearly invisible tentacles, box jellyfish are responsible for numerous deaths each year due to their painful and often fatal stings.
Large and powerful predators, crocodiles are responsible for numerous fatal attacks on humans each year, particularly in regions where humans and crocodiles coexist.
While typically regarded as gentle giants, elephants can be extremely dangerous when provoked or threatened, with numerous fatal attacks on humans reported each year.
Parasitic tapeworms can infect humans and other animals, causing a range of serious health problems including cysticercosis and neurocysticercosis, which can be fatal if left untreated.
Known for their aggressive behavior and powerful jaws, tiger sharks are responsible for numerous fatal attacks on humans each year, particularly in areas where humans engage in activities
Found in tropical oceans, cone snails possess venomous harpoons that they use to immobilize prey. Their venom contains powerful toxins that can be deadly to humans