Lincolnbark Sweet Little Butterpup dog treats are available in Oatmeal Peanut Butter, Salmon Peanut Butter, Pumpkin Peanut Butter and Chick Liver varieties. The treats are made with 100 percent human-grade ingredients, according to the company, and each batch is made by hand. They contain the chia-seed superfood, and no wheat, soy, corn, preservatives, additives or artificial colors or flavors, the company says.