Osmosis
It is caused by inflammation of stomach and intestines.
There are a few reasons why your puppy might be throwing up after eating and drinking. It could have a twisted stomach for example.
That's an ulcer, and results from the acid in your stomach dissolving a hole in YOUR stomach wall. I suggest a hospital.
Drinking unclean water carrying the worm larvae.
Coughing violently can cause a horse's stomach to flip. Another common cause is too much food getting blocked in the intestines.
Intestinal bleeding may happen if someone has bleeding in their intestines. It can also happen in the stomach, which then causes black stool at times.
It is secreted from the linings of the stomach and intestines.. cheers!! To make the poop easier to slide down the rectum.
Something called the gastrocolic reflex causes your intestines to move everything forward a bit when the stomach is stretched.
Intestines can get Chrohn's disease, which causes blockage in the intestines and can lead to cancer.
Sometimes deformation can be cause by the mother drinking, smoking or falling on their stomach when the mother is still pregnant.
Reports are mixed whether ice causes a stomach to swell. Stomach swelling is more likely caused by eating and drinking things that cause bloating, such as soda and alcohol.
If its on the lower abdomen could be that you are ovulating, sometimes the muscles contract during this period. If its the stomach could be that either you have lots of acidity in your stomach that causes digestion to be alittle hard/rough for food to move about in your intestines causing the pull.