Frog of the day: Phyllobates terribilis
As seen at the Baltimore Aquarium...I love its name.
"Arrow-poison frogs possess some of the most potent toxins known. Poison glands scattered all over the amphibians' bodies produce alkaloids that affect the nervous system. The most toxic species recorded is the bright yellow Phyllobates terribilis of Colombia, capable of injuring a person who merely touches it. The poison can be absorbed through unbroken skin and causes severe irritation. Local people do not kill this frog to extract its poison but merely scrape their blowgun darts across its back before releasing the amphibian." - http://www.britannica.com/