We have 3 dogs and a high traffic home and purchased a Dyson Animal several years ago. After recently having the carpets cleaned and seeing all the dog hair that the cleaner picked up, I realized it was time for a new vacuum. After MUCH investigation  I settled on this one. When it arrived it was über easy to assemble. I vacuumed the house first with the Dyson. Then I used the Shark. Holy moly! I got THREE more containers of pet hair and dirt out of the carpet! What an amazing little machine! Gets under the nightstands and furniture too. Fantastic machine!