What is a small blue frog that is poisonous? The blue poison dart frog of course. Blue poison dart frogs are very interesting animals. They are interesting because they are the most poisonous type of frogs. The animal I chose is the blue poison dart frog also known as the Azureus. The phylum it belongs to is Chordata. Characteristics of the Chordata phylum are: most have vertebrates in other words animals with a backbone, they live in water for part of their life, they have no notochord or a skeletal rod, they have a nerve cord, and slits in their throat. For instance, blue poison dart frogs are vertebrates. Azureus are born in water and stay there while they are tadpoles, and when Azureus grow their legs and turn into frogs they
