Answer:
A large oasis in the desert. Come with cash and leave with none.
Tear me off and scratch my head, what once was red is black instead. What am I?
In a tunnel of darkness lies a beast of iron. I can only attack when pulled back. What am I?
In my yard there's a bed with no pillows a trunk with no clothes a branch with no leaves. What am I looking at?
A little pool with two layers of wall around it. One white and soft and the other dark and hard, amidst a light brown grassy lawn with an outline of a green grass. What am I?
What scientists might call your pooch.