Despite their fearsome reputation, timber rattlesnakes are typically shy and elusive, preferring to avoid human encounters whenever possible. Image via evangrimes ...

The Eastern Indigo Snake (Drymarchon couperi), known for its lustrous, blue-black scales, is one of North America’s most fascinating and important snake species. As the longest native snake in the ...

Two new species of loricariid catfishes, Parotocinclus bidentatus and P. muriaensis, are described from the rio Paraíba do Sul basin. They possess accessory unicuspid teeth located internally to the ...