Why is my cat smacking lips and repeatedly vomiting after eating?
It's not possible to say exactly what is causing this, but what you are describing is typical for a cat that is nauseous. One possibility is that he ate something he was not supposed to like medication, a chemical (i.e. antifreeze), or a plant (i.e. lilies). Vomiting is often the first signs of an exposure to a toxin, so I recommend checking if it's possible for him to have eaten anything other than his normal diet.
Vomiting and nausea can also be due to an infectious disease, organ failure, or imbalance in the blood. In order to narrow down the possibilities, you would have to take Tobias to the vet for an evaluation.
This doesn't appear to be an emergency, but if Tobias is acting very depressed and is vomiting continuously, then it would be best to take him to the vet sooner rather than later. If he is otherwise acting normal, then it's important to not give him any food for the next eight hours, but make sure he has plenty of clean water available. If he's not vomiting in eight hours, then only feed him a small amount of food (about 1Tbsp.). If he keeps that down, then you can feed a little more in two hours. If the vomiting is continuing tomorrow, then it's best to take him to the vet for an evaluation.
I hope that helps and Tobias gets better soon.
Updated on September 23rd, 2025