My two-month-old dog ate some pork from my pork patty on a walk, played, then vomited it, and later her face swelled and one ear drooped-what happened?

After eating pork from a pork patty outside and then vomiting, with facial swelling at home, possible causes: 1. Food allergy-the dog may react to an ingredient, causing vomiting and facial swelling via digestive and allergic responses. 2. Food poisoning-the patty may contain toxic components like additives or seasonings, damaging digestion and immunity and causing inflammation.

Given the severe, persistent symptoms, go to a hospital to confirm allergy; if so, give desensitization shots and fluids promptly, or allergic shock may result. The vet can do a full exam-observing vomiting, temperature, digestion-to determine the problem and treatment.