Puffer Fish
They like to call the pufferfish the clumsiest fish in the oceans. We are sure that you are familiar with the way that it looks! While we agree that it is adorable, you should be careful around this animal. It puffs up and becomes too big for its predators, but nearly every species of it is covered in tetrodotoxin.
Assassin Bug
Where did the assassin bug get its name? Well, you can say that it was descriptive. Interestingly, it is also known as the kissing bug. Can you guess why? The answer to that question is that this insect bites humans in the lip area! After doing that, they then deliver their possibly fatal sting—what a way to go.