Answer:
The ones in the sea are prickly, but the ones on the street might pickpocket you.
Microparasite expert at sucking the blood of mammals and birds
I'm a large animal with a hump on my back. I'm used for transport in the desert. What am I?
I am small fluffy and love to chase mice. I purr when I am happy. What am I?
I say hoot and I'm wise. I sleep during the day and hunt at night. What am I?
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.