Cats throw up after eating for several common reasons. One frequent cause is eating too quickly, which leads to swallowing air and undigested food that the stomach can't handle, resulting in vomiting soon after a meal. Some cats may also throw up if they have food intolerances or allergies, or if they are adjusting to a new type of food. Hairballs can cause vomiting, especially in cats that groom frequently. Vomiting undigested food may also signal gastrointestinal issues, such as gastritis or inflammatory bowel disease, or more serious medical conditions. Occasionally, vomiting is a reaction to eating spoiled or very cold food, or from movement or exercise immediately after eating. If vomiting is frequent, contains blood, or is accompanied by other signs such as lethargy or loss of appetite, a vet visit is recommended to rule out serious illness. In summary, your cat may throw up after eating because it:

• Eats too fast or too much at once
• Has food allergies or intolerances
• Is affected by hairballs
• Has gastrointestinal irritations or other medical conditions
• Has eaten something spoiled or too cold

Feeding smaller, more frequent meals, using slow feeders, and ensuring food is fresh and at room temperature can help reduce vomiting. Persistent or severe vomiting requires veterinary attention to diagnose and treat underlying causes.