Compulsions can be human and harmless but there is a certain spectrum of obsessiveness, which is not harmless.
OCD is, by definition, harmful in some way. But to answer your question, it's perfectly normal for humans to have small compulsions that don't interfere with daily life and function.
Disordered in some way. Harm and disorder are identical only in that they are both disproportionate reflections on order. An ocd is a disproportionate reflection upon one orderly action.
At a Confest - a downunder equivalent to Burningman festival - I watched a young woman start nodding her head to the music , she then started chuckling, lost control of herself and had to dance to the music.
Curiously water levels out. Order is inherent in being. Having and being are the same. Stress disorders are caused by trying to conform to some other standard. This slave training is brutal to the sensitives sense of well being. We do the best we can always. Thing is to do something you have to know what you are doing. You can't teach from the outside in. So you that care to punch a clock go on with your fight and quit telling everyone else how to be on time. Love is a flower they say. Tend to it dearly and it will grow like the lilies of the field. Insult the innocent and we all pay dearly.
I'm only a little ocd about one thing. I check my alarm clock like 3 times before I turn out the light and get into bed.
no it isn't. they can be observed in other terrestrial species. its mostly not a species thing at all, but an individual one. what is more important to understand, is that no one is bound by species, nor anything else, to do so.