According to various sources, the answer to the question "what is the deadliest animal in the world?" varies depending on the criteria used. Here are some of the deadliest animals to humans:

• Mosquitoes: Mosquitoes are responsible for the most human deaths per year, causing around one million deaths annually due to the diseases they transmit.

• Humans: Humans are the second deadliest animal to humans, responsible for around 475,000 deaths per year due to homicides and other violent acts.

• Snakes: Snakes are responsible for around 50,000 deaths per year due to venomous bites.

• Dogs: Dogs are responsible for around 25,000 deaths per year, mostly due to rabies.

• Freshwater snails: Surprisingly, freshwater snails are responsible for around 20,000 deaths per year due to the parasitic disease schistosomiasis.

Other animals that are known to be deadly to humans include crocodiles, hippos, elephants, and various species of big cats. Its worth noting that the likelihood of being killed by any of these animals varies depending on factors such as location, behavior, and human activity.