Fwelin 
"[@Lucky Shot":](/1348525#comment_5807256
)
So, you're assuming that the original instruction booklet didn't specify gender, AND that the NoA localizers made his gender up (when they could have easily just asked NoJ if the original manual didn't specify), AND that the NP writers also got their information from the instruction book only? That's a ton of assumptions with nothing backing them other than "it's happened in other games".
It's not even actually relevant, as the English instruction manual stating it means that regardless of whether the original states it or not, until it's contradicted in a future English Zelda game or official source of information, it's_*still_* canon to the English version of the franchise.
As for male kangaroos with pouches, this page names several, as well as other examples of authors mistaking or ignoring gender specific features in animals:
http://tvtropes.org/pmwiki/pmwiki.php/Main/AnimalGenderBender
Also, Kangaskhan was created by Game Freak, not Nintendo.
So, you're assuming that the original instruction booklet didn't specify gender, AND that the NoA localizers made his gender up (when they could have easily just asked NoJ if the original manual didn't specify), AND that the NP writers also got their information from the instruction book only? That's a ton of assumptions with nothing backing them other than "it's happened in other games".
It's not even actually relevant, as the English instruction manual stating it means that regardless of whether the original states it or not, until it's contradicted in a future English Zelda game or official source of information, it's
As for male kangaroos with pouches, this page names several, as well as other examples of authors mistaking or ignoring gender specific features in animals:
http://tvtropes.org/pmwiki/pmwiki.php/Main/AnimalGenderBender
Also, Kangaskhan was created by Game Freak, not Nintendo.