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One of the most widespread venomous snakes, puff adders are native to Africa and parts of the Saudi Arabian peninsula. They are named for their habit of puffing themselves up to look larger than they are to deter predators. Rather than fleeing the sound of approaching footsteps as most snakes do, puff adders go still, hiss in warning, and then strike fiercely to protect themselves.  
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Perdido Key beach mice are a critically endangered subspecies of oldfield mice. They have small bodies, hairy tails, relatively large ears and protuberant eyes.
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Prevost’s squirrels are tree squirrels found in Southeast Asia. Their fur has three distinct bands of color: jet black, white and reddish-brown.
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Known for its impressive and loud vocalizations, the northern mockingbird is an intelligent bird that can mimic the songs of many other birds. 
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‚Hoppy‘ Amphibian Awareness Week! All week long, the Smithsonian’s National Zoo and Conservation Biology Institute will be sharing stories about amazing amphibians and the scientists working to save them from extinction. 
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Focus on the Future is a series that seeks to highlight the early career scientists who conduct research at the Smithsonian’s National Zoo and Conservation Biology Institute.
the way we expected, it means there is something else

A little brown bird with bold, black and white striped crown and a beautiful song. Their distinctive markings help many beginning birdwatchers learn anatomy and identification skills. 
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Meet Henderson and Kingston—two white-eared titi monkeys that live in Amazonia’s rainforest habitat! Get to know them in this Q&A with animal keeper Donna Stockton.
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Tomato frogs are aptly named for their striking colors. Females are a bright red-orange and males a yellow-orange. In some instances, they have black spots along their backs. These frogs can release a toxic secretion through their skin when threatened.
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The most abundant warbler in North America, the yellow-rumped warbler is an opportunistic omnivore that frequents balsam fir forests in the breeding grounds. Formerly two species, the myrtle warbler in the east and the Audubon warbler in the west, interbreed and hybridize. Ongoing genetic research may split them back into two species. 
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