You're like a dog with three legs.

Probably a Labrador, because they have old-soul eyes. Somehow they always look so sad, like they've seen the world and found no hope in it. Your eyes are sad, and empty. They're that piercing shade of blue: intimidating and somehow superior. 

I, a bird, am fearful by nature and destined to fly away. You scare me sometimes, because I'm afraid to become madly and passionately attached to you...only to have you bark and bite and break my heart.

You are a risk that I haven't decided if I want to take or not.