My Wheaton was doing exactly this type of gulping. She would vomit white foam and swallow anything in her path. As a result, she injested part of a rug and some of her bedding. The vet ruled everything out and assumed they were seizure related. I noted that these episodes would occur after applying the tick and flea med, frontline. It can cause seizures in dogs. I put her on pheno and it did help for a few years. She was laid to rest in 2013. I’ll pray for your dog. This is such a stressful and strange health issue. Vets don’t seem to know what it is.
