We got a DC40, which is the step below the DC41 Animal, and it gets clogged all the time with all the hair our dog leaves on the carpet. Every time it clogs, there are 3 or 4 different spots you have to go through to clear the clog, kind of like unjamming a copier. Other than that major problem, it's a nice vacuum.
If you've got a pet that sheds, you should probably go with a different vacuum. Dyson is overpriced for what you get.