
The Japanese Spitz should be combed and brushed regularly. This is a very tidy animal that should be bathed only when necessary. When the dog is shedding, use a comb with a double row of metal teeth to remove loose hairs from the under-layer.
Taken from the first website I listed.
They only moult bitches: when due in season, dogs: once a yearish. (these can not be dates put on a calender unfortatly (or everyone would know when not to enter a bitch into a show!!! ;) )