If I want to growl at everyone and everything, I will. There's not a whole lot you can do to stop me, no matter how many times you tell me to knock it off.
If Buddah looks at me, I can growl.
If you touch the top of my head, I can growl.
If I don't like the way the wind is blowing the leaves on that bush in the back yard, I can growl.
I like growling. Don't much care if you don't like me liking it. If you don't want to hear it, go in the other room.
If I'd known how much power there is in growling, I'd have done it years ago!