I have a dog that literally only eats grass when he needs to retch something up. He'll go to the back door and whine and gag, whine and gag. If we're upstairs,

I have a dog that literally only eats grass when he needs to retch something up. He'll go to the back door and whine and gag, whine and gag. If we're upstairs, he'll come fetch me. I don't stop him, either. I've learned that lesson. He's a mutt breed, we think half Yorkshire Terrier and half Miniature Schnauzer, for whatever that's worth. Our full-breed Rat Terrier did no such thing in 17 years of life but the mutt has been doing it since we got him nearly 15 years ago!