Problem
Mrs. Smith's question: Her 15 year old American Quarter Horse mare named "Ruby" is not eating well. She read on the internet that her horse does not have a gallbladder, so she asked if she should bring Ruby into our veterinary hospital for gallbladder transplant surgery. Mrs. Smith called back and thinks maybe she made a mistake and read on the internet that it was actually her dog that needs a gallbladder?" "Does Ruby the horse need gallbladder transplant surgery? Does her dog need a gallbladder?" Your answer should include: Does her horse need a gallbladder? Why or why not? How would her dog use a gallbladder? Please describe the function of the gallbladder in the digestive system and in the animal's diet. Compare and contrast a horse's diet vs. a dog's diet. Include scientific studies as references so I am able to read them.