Why do just female animated characters have eyelashes when males have longer eyelashes in true life?

Lol...
I would say that it is because females generally try to make their eyelashes appear bolder and darker with mascara. So some men may have longer lashes, but females bring attention to them making them darker and more visible, and animation reflects this :P

Long lashes are a way of showing who is female. Colored parts of the body like nails and lips can also play a factor as indication they are wearing makeup which a lot of female characters do. Hairstyle also plays an importance because a girl is gonna have a girl’s hairstyle in most cases. Clothing in most cases represents the character for example a dress. Shoes or high heels can also tell a character’s gender. If that didn’t already give you the answer than most female characters are voiced by females so voice plays a big factor so yeah those are all the possible ways a character can be identified

it's more feminie I guess