es_ar (Argentina), es_ec (Ecuador) and es_cl (Chile): 100%, based on es_mx
es_es Encyclopedia: 100%
Most names have remained the same. Only a few animals whose name has become a common noun, such as "tiranosaurio" (Tyrannosaurus), have their names translated into Spanish.
Full Spanish translation.
Most names have remained the same. Only a few animals whose name has become a common noun, such as "tiranosaurio" (Tyrannosaurus), have their names translated into Spanish.