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Key Facts

• Made of cholesterol, bilirubin, bile acids, and calcium
• Many pets have gallstones with no symptoms
• Can cause cholecystitis and cholangitis if they block bile ducts
• Ruptured gallbladder is a life-threatening emergency
• Only 50% of gallstones visible on X-rays
• Ultrasound is primary diagnostic tool
• Ursodiol and SAMe may be prescribed for liver protection