My limited experience has been roughly the same as the others, with a low germination rate no matter what I try, wet/dry cycles, scarification, sand paper, etc.
The ones that do germinate, continue to grow slowly but surely. I watch them carefuly and water them when they are obviously growing.
I currently have a pot sown in Nov/2010 with 20 habitat seed, (lucern valley)
4 germinated right away with no treatment other than soaking, the rest are just sitting there.
Forget the dog...Beware of the plants!!!