Answer:
Tear me off and scratch my head what once red is now black.
The time between daylight and darkness when blood drinkers like to come out
In the sun I like to play; in the rain I goes away; walk or run I always follow; in the mud I always wallow.
I am the key that is the hardest to turn
What side of a cat has the most fur?
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk