w.robinson----I have a new pond and noticed that I too am loosing water though no apparent area. It looked like a good clay bottom. I am aware of the need for the clay to swell, but what part do the hogs and cows play. I have horses in the pasture up the hill from my pond. Do I just wait for their waste to fill in the cracks , or do I stuff the cows and hogs in the cracks. could I save the ribs, and brisket to BBQ or do I have to use the whole cow. Seriously what part do they play.??