Your dog has something called "Bloat" It's kind of hard to explain- I don't think it's like human bloating. Here is a link to read more about bloat. See Related Link
Take him to the vet ASAP
The movement of ants in a dog's stomach may cause them to vomit after eating ants. When a dog ingest ants, to them, it may feel like a tickling sensation, which causes them to vomit.
Yes. In theory, anyone can make themself vomit.
It has a light frothy consistency and if you really dig your hands in it you'll notice it feels like death but if you drink it ......YOU WILL DIE
No, because ringworm is a fungal disease of the skin. Other intestinal parasites, such as roundworm can make a dog vomit.
Take your dog to the Vet
Try to get the dog to vomit, and take it to the vet.
It looks like soft-serve to me.
naol saba said it
it depends on whether your sick or not.
Friday
Yes, dog vomit slime mold is not toxic to pets or humans if ingested.