One important but often overlooked organ in your dog’s body is the gallbladder. This small organ stores and releases bile, which is secreted by the liver. Bile neutralizes stomach acid, aids in the digestive process and assists the immune system by killing off bacteria. Unfortunately, the gallbladder is not immune to health problems over time. One common issue dogs might experience in their gallbladder is the formation of gallstones, or cholelithiasis.