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Animal Tracks: April 3 -10

  From a tired tiger to a brilliant butterfly, get your cuteness fix from creatures great and small.

Beautiful butterfly wings hold sea snail's toxin

An Asian butterfly's white wings tipped with vibrant red-orange are not only eye catching, they contain a poison, scientists have found. Full story

Butterfly enthusiasts  ‘delighted’ data being used       

  NBC’s Anne Thompson spoke to scientist Greg Breed of Harvard Forest, and Massachusetts Butterfly Club president and vice president Stephen Moore and Tom Gagnon on the value of data collected by butterfly enthusiasts and citizen scientists.  

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Butterflies reveal Guantanamo biodiversity

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Related Photos

South Africa's Chad le Clos smiles after winning the men's 200m butterfly final during the World Swimming Championships in Barcelona
South Africa's Chad le Clos smiles after winning the men's 200m butterfly final during the World Swimming Championships in Barcelona

South Africa's Chad le Clos smiles after winning the men's 200m butterfly final during the World Swimming Championships at the Sant Jordi arena in Barcelona July 31, 2013. REUTERS/Albert Gea (SPAIN - Tags: SPORT SWIMMING)

South Africa's Chad le Clos reacts after winning the men's 200m butterfly final during the World Swimming Championships in Barcelona
South Africa's Chad le Clos reacts after winning the men's 200m butterfly final during the World Swimming Championships in Barcelona

South Africa's Chad le Clos reacts after winning the men's 200m butterfly final during the World Swimming Championships at the Sant Jordi arena in Barcelona July 31, 2013. REUTERS/Albert Gea (SPAIN - Tags: SPORT SWIMMING)

Le Clos of South Africa reacts as he won the men's 200m butterfly final during the World Swimming Championships at the Sant Jordi arena in Barcelona
Le Clos of South Africa reacts as he won the men's 200m butterfly final during the World Swimming Championships at the Sant Jordi arena in Barcelona

Chad Le Clos of South Africa reacts as he won the men's 200m butterfly final during the World Swimming Championships at the Sant Jordi arena in Barcelona July 31, 2013. REUTERS/Michael Dalder (SPAIN - Tags: SPORT SWIMMING)