However, this is not very common in little dogs (but can still happen). With bloat the stomach twists and fills up with air. It is very painful and if not treated will lead to death. It's also possible that he has eaten something that has become lodged in his intestines. Again, ...
Bloat is possible, but this is uncommon in a small dog. Bloat happens where the stomach twists and bloats up. It is a serious emergency and often needs to be treated with surgery. Usually dogs with bloat will have pale gums and often will be acting as if they are trying to vomit but...