Phobias are very common. A phobia is when someone has an overwhelming fear of an object, place, animal, etc. Two of the most common phobias that majority of us know about are acrophobia and claustrophobia. Acrophobia is the fear of heights while claustrophobia is the fear of enclosed spaces. A phobia of mine that may be uncommon is ailurophobia which is a fear of cats. I get extreme anxiety when seeing a cat in general. A few months, a cat was on my neighbors roof where I would not even walk to my car until the cat was gone.