Your birthday pup can celebrate their birthday in style with this cute shirt! Features a "Happy Birthday to Me" embroidery design on the back, along with your pet's name if you wish. This shirt can be customized with your dogs name added below the design. If you would like the name added please type the name in the comments when ordering (on the cart page). You may also choose colors for the embroidery thread. If no preference is given, we will just choose what looks best! Our pet shirts feature: - A high-cut belly to avoid bathroom messes - Ribbed sleeves and hem - Made of polyester and cotton, the fabric won't fade or shrink and is super soft with a nice stretch to it - Machine washable - Available in a rainbow of colors, you're sure to find one to suit your pet perfectly! - Available in a wide range of sizes to fit the tiniest puppy up to large breeds. ***The rat terrier shown in the photos is wearing a medium. Please refer to the size chart in the images and measure your pet to choose the correct size. If your pet is between sizes, please order a size up. *** PLEASE NOTE: We are not responsible for customers who order the wrong size for their pets because no measurements were taken. Please follow the measuring instructions and refer to the size chart, it is very accurate. We will not accept returns or exchanges for mis-ordered sizes since all items are made to order. ***