Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 3417 Male dart frogs fight each other over mating territories, and they make a trilling sound to attract a mate. Taking care of their young Many poison dart frogs are dedicated parents. The female finds a safe place to lay her eggs. The male then takes care of the eggs, making sure they don’t dry out. In 10 to 14 days the tiny tadpoles emerge from the eggs and they wig- gle their way onto the male’s back. The male then takes the tadpoles to a pool or pond where they are released. There they develop into adult frogs. Medical promise Chemical secretions from poison dart frogs are showing great promise in medical research. A pain killer much more potent than morphine has been developed, and researchers are also developing muscle relaxants and heart stimulants from the secretions of poison dart frogs. A deadly creature Found in the rainforests of Central and South America, poison dart frogs are small, but they can be very deadly. Measuring only about an inch long, their skin can secrete some of the most toxic chemicals known to man. For example, the tiny Golden Poison Dart Frog has enough poison in its skin to kill 10 men. These amphibians are called “dart frogs” because, for centuries, South American Indians have used their toxic secretions to poison the tips of their blow darts and arrows. A strike from a poisoned dart tip will quickly kill the birds and monkeys the Indians hunt. There are over 100 different species of poison dart frogs. While all poison dart frogs in the wild are somewhat toxic, only a few species are toxic enough to be dangerous to humans. Brilliantly colored Poison dart frogs are known for their striking colors. The frogs can be bright blue, green, red, pink, or gold with darker spots or stripes. Their viv- id colors are not only beautiful, they are also protective. Their easy-to-see colors warn predators to stay away. The life of a dart frog Poison dart frogs spend most of their time hunting for food on the rainfor- est floor near standing water, pools, and streams. Having excellent vision, poison dart frogs capture ants and spi- ders with their long sticky tongues. While most frogs are active only at night, poison dart frogs are active during the day. This is because they do not fear predators. 115 Poison Dart Frog A blue and black poison dart frog Review Questions 1) Why are these frogs called poison dart frogs? 2) Besides being beautiful, what purpose does the frog’s color serve? 3) Why is the medical community interested in these frogs?