Oh jeez. XD
I mew and growl at things relentlessly, and thankfully don't get in trouble for it usually.
I can purr rather well, even though my fursona is a dog (whattheheck?), and happiness usually results in a purring session, I'm sure.
Sadly, my sense of smell is about dead (bad genetics) so I usually can't smell anything at all, but when I do (certain scents, like.. oh, say, cinnamon apples) I have to follow it.
As a kid I walked on my toes a lot, chewed on things for the heck of it, and would howl.
From what I've heard from friends, I also tend to chase things in my sleep.
So, either I'm insane, or I'm furry. XD The latter is easier to believe.