Friend or fang?

Friend or fang?
The beauty of a bike
Is that adventures lie
Around the far corner
And up the block ahead.
And the wind in my face
With the sun on my back,
Was I oblivious
To the friend, or the fang?
I listened to the breeze
Then heard a faint rapping.
Pad, paw, claw on pavement,
Predator upon me?
No matter, he was kind
Or not, dog lies behind.
-Bob Maulucci