I guess if you are throwing dog shit into the mix you probably want to leave it a year but otherwise, a properly constructed and tended compost pile should be complete in 6 - 8 weeks. Piss is also a great additive to any compost pile. The pile needs adequate drainage, periodic aeration, and nitrogen additives from time to time (hence the piss).

Careful with the seed that go in there. They are killed by the composting process so long as you achieve optimum thermophilic composting which generates significant heat. However, you need at least a cubic meter of material to achieve these results. Otherwise, the seeds and pathogens will live on.