I bought this Shark online over a month ago. I would expect any machine made to clean up dog hair would have great suction.  The suction is poor. The battery runs out too soon. The elbow of the vac keeps getting clogged at the elbow. I very much regret this purchase. I only have one small dog so it should work better. I had a Dyson for years before the suction was not adequate.  Very very disappointed.