Poison dart frog (also dart-poison frog, poison frog or formerly poison arrow frog; Dendrobates azureus) is the common name of a group of frogs in the family Dendrobatidae which are native to Central and South America. Unlike most frogs, these species are active during the day and often exhibit brightly-colored bodies. Although all wild dendrobatids are at least somewhat toxic, levels of toxicity vary considerably from one species to the next and from one population to another. Many species are critically endangered. These amphibians are often called “dart frogs” due to indigenous Amerindians’ use of their toxic secretions to poison the tips of blowdarts. In fact, of over 175 species, only three have been documented as being used for this purpose (curare plants are more commonly used), and none come from the Dendrobates genus, which is most characterized by the brilliant color and complex patterns of its members.Taken at Denver Zoo.Poison Skin – The most amazing adaptation these frogs have is their ability to produce toxins. The toxins in the skin of these frogs are found in high concentrations in the prey they eat, especially ants. After eating the ants, these toxic compounds are secreted by glands in the frog’s skin providing them with a powerful means of defense. The toxin is capable of paralyzing or even killing potential predators. Deadly Colors – Although many frogs are green or have muted colors and patterns that help them hide from potential predators, some frogs like the blue poison arrow frog use bright colors as a means of defense. The brilliant blue color of these frogs serves as a warning to potential predators not to eat it. Often the more vibrant and colorful a frog is, the more poisonous it may be.
The Bengal tiger, or Royal Bengal tiger (Panthera tigris tigris, previously Panthera tigris bengalensis), is a subspecies of tiger, found in India, Bangladesh, Nepal and Bhutan. The Bengal tiger is the most numerous of the tiger subspecies. According to WWF, there are about 2,100 Royal Bengal tigers in the wild today, including 1,411 in India, 450 in Bangladesh, 150 in Nepal and 100 in Bhutan.The Bengal tiger is historically regarded as the second largest subspecies after the Siberian tiger even though recent scientific studies have shown that Bengal Tigers are, on average, larger than the Siberian Tigers. The Bengal subspecies P. tigris tigris is the national animal of Bangladesh, while at the species level, the tiger Panthera tigris is the national animal of India.Taken at Denver Zoo.
The Golden Lion Tamarin (Leontopithecus rosalia, Portuguese: Mico-leão Dourado) also known as Golden Marmoset, is a small New World monkey of the family Callitrichidae. Native to the Atlantic coastal forests of Brazil, the Golden Lion Tamarin is an endangered species with an estimated wild population of “more than 1,000 individuals” and a captive population maintained at approximately 490 individuals.Taken at Primate Panorama, Denver Zoo (http://www.denverzoo.org/). Primates are generally housed in the North West section of the zoo, in and surrounding Primate Panorama.Primate Panorama spreads over 7 acres (2.8 ha) and primarily houses apes and other larger primates. Tree-dwelling apes and monkeys live in open-air wire mesh tents that soar four stories high and cover more than an acre of ground. Inside these tents, the primates can play and climb on twisting vines. Gorillas roam freely, climbing ropes and taking afternoon hammock naps in one of the largest Gorilla habitats in the world. Orangutans have their own outdoor habitat where they can climb trees and swing in hammocks.
Taken at Tropical Discovery, Denver Zoo (http://www.denverzoo.org/).Tropical Discovery section was opened in 1993. This building contains numerous aquaria and various tropical mammals, amphibians, and reptiles, including Komodo dragons.