Causes of vomiting a yellow liquid include complications from surgeries such as gastrectomy and gastric bypass. Peptic ulcers block the pyloric valves preventing the stomach from emptying normally. Consequently, a person... More »

According to WebMD, cat vomiting up clear liquid indicates mild intestinal distress, especially when caused by fibrous material the cat has swallowed, such as long fur, grass or string; cats cannot digest such material. ... More »

A dog throwing up yellow bile is likely to have gastrointestinal problems, or stomach reflex, according to PetMD. Stomach and intestinal reflux occurs when a dog's stomach is empty for a long period of time. More »

Causes of lightheadedness include deep or rapid breathing, vomiting, fever, and allergies, states WebMD. Excessive physical activity, alcohol use, lack of sleep and unhealthy eating habits can cause fatigue, according to... More » Health Pain & Symptoms

Causes of yellow eyes include conditions such as cirrhosis, bile duct obstruction, pancreatic cancer and blood disorders, such as sickle cell anemia and incompatibility reactions from a blood transfusion, states Healthli... More » Health Pain & Symptoms

Causes of pelvic pain include appendicitis, broken pelvic bones, kidney infections, hernias, intestinal complications or sexually transmitted diseases, according to WebMD. Women specifically may experience pelvic pain as... More » Health Pain & Symptoms

Causes of unconsciousness include low blood pressure, dehydration, hyperventilation, low blood sugar and syncope. Abnormal heart rhythm, straining, alcohol poisoning and drug poisoning also cause unconsciousness. Other c... More »