From Shih Tzu to Labrador Retriever, here we list some pet dog breeds that are more suitable for first-time dog parents.From Shih Tzu to Labrador Retriever, here we list some pet dog breeds that are more suitable for first-time dog parents.From Shih Tzu to Labrador Retriever, here we list some pet dog breeds that are more suitable for first-time dog parents.