RESULT: A dog (man's best friend).
People are scared of me but I am loved by some. I can be your best friend but could become your enemy in a blink of an eye. What am I?
I'm more than a fair weather friend, On me you can depend, To hang around at least 'til summer's end. I serve your house, the store, the school, I'm liked everywhere 'cause I'm so cool.
What friend is this?