That would be a wolf whistle.

The Big Bad Wolf in that Hanna Barbara Cartoon did it all the time when seeing Red Riding Hood, remember?

I do miss Cartoon Network... (:

Merriam-Webster

One entry found for catcall.


Main Entry: cat·call
Pronunciation: -"kol
Function: noun
: a loud or raucous cry made especially to express disapproval (as at a sports event)

@anom: "catcall" paßt hier wohl nicht.

Wolf whistle is right. A cat call is almost an insult.

@p: whereas every woman should feel flattered by a wolf whistle from some sweaty builder with a beer belly? that'll be right...

Wie kann ich das nur erklaeren, dass mir die Maedels gerne "hinterher pfeiffen"...

I mean, how do you form a proper sentence with 'wolf whistle' and is there an adjective of that? to wolf whistle?

Du kannst das als Verb benutzen, aber nach meiner Erfahrung wird öfter einfach "to whistle at s.o." benutzt. Also: "the construction workers whistle at s.o."