Dog Rocks Â® are a 100% natural, paramagnetic igneous rock mined from a quarry in Australia. They contain no chemicals and have been scientifically tested and proven safe for all pets.
In brief: Water. Free fluid is typically water. The lining of your abdominal contents are slippery (your bowel, the lining of your organs) and it's thus wet inside your abdomen. It's normal to have a little free fluid in one's pelvis, as that's where fluid tends to pool.
Should I make a big deal out of it? Freenom is a service where you can register free domains with lesser known tlds (.tk, .ml, .ga, etc.) Earlier this year I registered 1337.ml as a free domain. It was a cool domain that I used personally for pointing to my addresses at home, some VPS servers, gaming servers etc.