Our six week old doberman started foaming at the mouth yesterday. The people who sold us our puppy told us he must have gotten into something and to give him some peroxide so that he would vomit and get whatever out of his system. He stays inside with us and the only possible thing he might have gotten into was the grass beside our house which was sprayed a week ago by our local pest control agency. Some people at my work last night told me he might be thirsty causing him to do this. Others said it was some kind of exposure to a poison. I'm taking him tomorrow to get his 6 week shots and I'll ask the vet as to why this is happening but if anyone knows or has experienced this before please reply because it has us worried about his health.