European Robin (Erithacus rubecula)

Mosquito, Amazonia, Brazil
Is the Mosquito the most dangerous animal living on earth?
Many diseases are transmitted by this insect, such as malaria (with 250 million cases annually, the disease kills more than 900,000 people per year), the yellow fever (affects 200,000 people per year and is fatal to 30 000 people), dengue (the most serious variation strikes 500 000 people per year) …
Spot-fin porcupinefish (Diodon hystrix), Maldives
The porcupinefish, in case of danger can inflate itself by swallowing water to deter the potential predator with its larger volume and it can raise its spines. In addition, it concentrates a mortal poison in certain parts of its body.