I just read that onagers (wild ass) becomes reddish-brown during the summer.
I also read another article that said in mid-June they have their mating
season which is when the stallions fight each other for the females. Maybe
that is why it could say red wild ass. During the winter, they are grayer.
Maybe Ishmael will be a red onager and not the other color one because that
is when they fight each other.