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Others mimic predators. When the owl butterfly spreads its wings, it looks like the face of an owl — a scary sight to a small bird or lizard looking for a meal!
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Some make themselves into the perfect imitation of a simple stick! 
The warm, moist environment is an ideal habitat for reptiles and amphibians. Frogs, salamanders, snakes, and lizards are abundant. Visitors usually see the frogs and the iguanas and other lizards, but the snakes are difficult to site. They tend to avoid visitors.
Most of us think of monkeys when we think of rain forests. In Costa Rica, there are abundant howler monkeys and spider monkeys. Other mammals include guinea pig-like rodents called 'pacas' and 'agouti'. Sloths live here, as do tapirs, jaguars and ocelots. Sloths move so slowly that moss actually grows on their backs. What a great way to camouflage themselves among the trees!
