"My muzzle is gray"

My muzzle is gray
I am past my prime
I knew there would come this time.

I find I am slower to rise
and there is a slight cloud to my eyes.
I knew it would not last
that some day I would be a mirror of my past.

Yet, your eyes settled on me
my heart filled with glee
You need not ask
instinct and mileage guide me through the task.

The cold air nips my breath
my muscles struggle as I run
I know I am slower than when I was young.

You gave this to me
this Christmas day
your gift to me
our special way.