Why do dogs vomit white foam?
White foamy vomit is usually due to saliva and digestive secretions mixing with air in your dog's tummy, resulting in vomit with a soap suds like appearance. Typically there is some sort of irritation or trigger causing the white foamy vomit. What should I do if my dog is throwing up white foam? If it's white foam… your dog is likely suffering from bloat or gastrointestinal problems. In these cases, they may be trying to vomit but not having much luck.