I am a cat

I follow the sunbeams around the house all day. 

I'll follow them outside rather than be in a shadow.

People think I appear and disappear like the mist.

I'm made for adventure.

I am intolerant of noisy people and likely to leave the room when noise starts.

I love to be petted... by the right hand, but don't tolerate the wrong one.

I love to stretch luxuriously and just sit there gazing at people I love.

I love to snuggle and be cozy and warm.

I don't need you for food... I can hunt my own. 

... But I'll gladly share a meal and company if the meal and company are good.

I'm loyal to people who are worthy of it.

I don't follow rules that don't make sense to me.

I can't be caged.

But I'm symbiotically beneficial when the conditions are right.