Feel bad for the do but do nothing.
Bring the dog to a shelter.
Give the dog food.
Bring the dog home.
Try to hide your panic and support them.
I would be the one die.
Get really mad about it and cry.
Say oh well, it's not me and walk away, but be walking away to hide your pain.
Try to find a way to save them
Be an only child.
Be a twin
Have three sisters/brothers
Have one sibling.
Look at the stars
Mess with people.
Hang out with your best friend.
Listen to music
Here's an interesting quiz for you.