It all depends on the ingredients used and how it was cooked. Removing as much excess fat as possible limits the chances of having a gastrointestinal response. Boiling the hamburger meat is recommended over frying. Many people give this to dogs when they have a tummy upset. You might hear of boiled chicken/hamburger and rice being fed for vomiting dogs or those with diarrhea. Hamburger must not be a main staple as it does not provide the proper amount of daily nutritional requirements.