Answer:
I've been around for millions of years, but I am no more than a month old. What am I?
I am needed for most animals and hardcover books. What am I?
As I went over London Bridge I met my sister Jenny; I broke her neck and drank her blood and left her standing empty.
I am owned by Old McDonald.
The more it dries, the wetter it becomes. What is it?
The answer I give is yes, but what I mean is no. What was the question?