Humans can howl. They have to be taught, but it's very do-able. It's a type of throat-singing: when I learnt to throat sing/chant AUM, my howl improved measureably (by the way, I'm no slouch at coyote howls, either).
We have a mass ritual at Burning Man where people throughout Black Rock City howl at moonrise. It's beautiful; different parts of the city see the moon before other parts so there's this rolling, surging howl that reverberates throughout the city, along the crescent and front-to-back, reaching a crescendo as the moon rises above the hills. Let me tell you — there are few sounds in this world more stirring and uplifting than thousands of throats lifted in a wordless wolfsong.
I'm going to give wolf howl lessons at Burning Man next year, as part of my camp's activity.
Other than Burning Man — I like to howl, and I don't particularly care if it draws stares. I've howled for years; if someone wants to think it's weird, I care not. It harms none and you'd be surprised how many people actually enjoy hearing a nicely-executed howl. Once when I was working the booth at Saturday Market, someone's wolf-dog in the back of their truck parked nearby stuck his head out the window and started howling. I answered back and several others in the vicinity joined in.
I sang to Luna a few nights ago when I walked out of the cancer clinic here and caught sight of the full moon rising. The sun had just disappeared under the west horizon and the sky wasn't full dark, more like a dusky blue-grey, with the disc of the moon coming up. I stopped in the middle of the parking lot, canted my head up and howled, long and sweet. Some nurses walking to their cars didn't join in, but gave me great big smiles.
I would note, however, that I don't do it a lot. But when I feel the mood, and feel the general mood wouldn't miss it, I'm not afraid to do it.
The way I see it, those who think a human howling is weird will think that no matter what you say otherwise and it's not worth breaking a sweat over. To others, it's another enriching note in the symphony of life. An ye harm none, do as ye will.
Edit: Regarding Howl At The Moon...I thought someone was organizing a grassroots movement of gathering howling groups in different cities, kind of like flash-mobbing or the skipping movement.
H'mm...there's an
B: to avoid mob situations
<--- THEY PWN U