Grass and Vomiting. Because many dogs eat grass when their stomachs hurt, it's not uncommon for a dog to eat grass and then immediately throw up. The vomiting could be completely unrelated to grass. It's also possible some types of grass help to induce vomiting and eliminate bad foods from your dog's stomach. In short, the grass may induce vomiting or grass-eating may be more likely with a dog who is already going to vomit. Veterinarians are split on this issue.
A personal reference letter should provide information on who you are, your connection with the person you are recommending, why they are qualified, and the specific skills they have that you are endorsing. It should also include specific examples of times they demonstrated these skills.
The following is a sample reference letter written by a former employer. Also see below for more reference letter examples and tips for writing a letter of reference.