Board Thread:Naruto Discussions/@comment-25228549-20140821104935/@comment-28861328-20140823182207

Seelentau wrote: They don't have reproductional organs.

Absence of evidence is not evidence of absence. Kishi isn't going to draw fox genitals every time Kurama splays his legs anymore than he shows genitals on the various sexy techniques. If there is enough evidence (speech, references to them as a certain gender, etc), then they should be listed as having a gender.