There are a whole range of procedures of genital mutilation for both sexes which tend to get - not always accurately - called "circumcision". Fortunately the one for males which is officially sanctioned by both Jewish and Islamic authorities is at the relatively mild end of the spectrum.

As for the kind of barbarities that get referred to as "female circumcision", it's not really any fairer to call it Islamic than it would be to call it Christian, on the basis that Christians in some parts of Ethiopia also go in for it. And we should remember that there are to be found clerics in pretty well all religions who are liable to come up with the daftest pronouncements. Generally speaking you'll find some other cleric who tries to balance things out by saying something more sensible, but that doesn't always get picked up.

There are branches of Christianity which reject Infant Baptism, and think this should be reserved for adults. I've sometimes wondered whether there are varieties of Judaism or Islam which take the same attitude towards circumcision.