Discussion Why do only human females have periods?

[edgelordcel]

Seriously, only species that has this.
Why

 

[rope infinity ♾️]

Idk why but only higher primates like humans and baboons etc menstruate

 

[Mecoja]

I think that all mammals have it when its mating season.

 

[Johnhatenigger12]

They are designed to do that.

 

[FrothySolutions]

Bats and shrews menstruate too.

But yes, it is rare when you consider mammals as a whole.

 

[edgelordcel]

Bats and shrews menstruate too.

But yes, it is rare when you consider mammals as a whole.

No

 

[foidrapist69]

Dogs have it too until sterilization (other mammals might do it too but blood dripping from their cunts is not interesting enough to be a subject of publications)

 

[just another koala]

Men also have a cyclical hormonal build-up and decline with mood swings etc. However, we don't bleed from the cock.