急性胃炎

症状：呕吐、吐黄水、呕吐物带血、腹痛（不安，前肢前伸，触腹部紧张敏感）、口渴、口腔见黄白舌苔、口臭、厌食、没精神，严重会出现脱水。

慢性胃炎

症状：间歇性呕吐、腹泻、呕吐物有时血液、嗳气、烦渴、腹痛、异食症状。

消化性溃疡（胃溃疡、十二指肠溃疡）

症状：呕吐、呕吐物有血液、口渴、拒食、腹部压痛、黑褐色血便。溃疡会造成胃肠穿孔，导致急性腹膜炎而死亡。

胃肠炎

症状：呕吐、腹泻、拉血便、腹痛、精神萎靡，严重会出现脱水。

胃酸过多

症状：吐酸水、呕吐黄色粘液、焦躁、饮欲减退、厌食、无精神。

食道炎

症状：反流、吞咽困难、食欲不振、厌食、体重减轻、唾液过多

Acute gastritis

Symptoms: vomiting, vomiting yellow water, bloody vomitus, abdominal pain (anxiety, foreleg extension, sensitive to the abdomen), thirst, yellow-and-white tongue coating on the mouth, bad breath, anorexia, lack of energy, and severe dehydration.

Chronic gastritis

Symptoms: intermittent vomiting, diarrhea, vomit, sometimes blood, suffocation, thirst, abdominal pain, and abnormal food symptoms.

Peptic ulcer (gastric ulcer, duodenal ulcer)

Symptoms: vomiting, vomiting with blood, thirst, refusal to feed, abdominal tenderness, dark brown bloody stools. Ulcers can cause gastrointestinal perforation, leading to death from acute peritonitis.

Gastroenteritis

Symptoms: vomiting, diarrhea, diarrhea, abdominal pain, debility, and severe dehydration.

Hyperacidity

Symptoms: vomiting acid water, vomiting yellow mucus, anxiety, loss of appetite, anorexia, and lack of energy.

Esophagitis

Symptoms: reflux, difficulty swallowing, loss of appetite, anorexia, weight loss, excessive saliva