Happy.

I was barely older than you when we found this little pup.

Her tail wouldn't stop wagging so she must've been happy

She was always stuck to my leg like a bootknife 

Never needed a lead, I knew she'd never leave

I was barely a man when I left her behind

and the years that past weren't always kind

She got so much older, started losing her sight

So I made more time and she held on alright

But things changed so fast and it's never seemed fair

that the day that she let go, I wasn't there

I loved her so much and without trying to be sappy

Every time I think of her, she can still make me happy.