I have only used this vacuum about 15 times and I'm already an expert at disassembling it to remove dog hair. It is advertised as a pet hair vacuum.  I would have spent the extra money to get a REAL pet hair vacuum.  
ALSO, it has no light in the front...was very disappointed about that.
I bought this particular model because my other shark was awesome!!! It lasted 7 or 8 years and I loved it. Apparently they don't have the same quality standards as they used to.