Gender locked race?

[Daralii]

Nevermind !
Hrothgar apparently have majestic mane ! ~♥
(read on FFXIV discord from datamined quest text)

Lions aren't the only creatures with manes though, and depending on what team Blufever was on, he might've just been guessing at the leonine aspect. Horses, hyenas, some jellyfish, etc all have manes - I'd even describe the male viera from the HW concept art as having manes. Their namesake is the only thing we have to go on.