The size of a woman's anus can vary significantly among individuals, as it is a muscular structure that can stretch and accommodate different sizes. During activities such as childbirth or anal intercourse, the anus can temporarily stretch, but it generally returns to its original size afterward. Factors such as genetics, age, and overall health can also influence its elasticity. However, there isn't a specific measurement for how large it can become, as it's highly individual.
If you are refering to "Fingering" as a sexual activity then of course men can. They can "finger" a woman's vagina, a woman's anus, another man's anus or their own anus.
Yes.
Itll get big enough
There should not be secretions coming out of the anus. It may be some type of infection.
yes
sure
if you are talking about the 'anus hole' it shouldn't be bigger than a quarter.
Only if you're anus is as big as your eyes.
The same place as a woman's, between the buttocks.
Yes you can
A episitomy is a thing where they cut almost to a woman's anus and they take the baby out. And then they use stiches to put her anus back together
Three: urethra, anus, and vaginal orifice. See the Related Link below for a 3D diagram.