Front Message: If I were human, I think we’d still be good friends. Inside Message: Especially if you kept feeding me. Happy Birthday This Birthday greeting card from a pet features pink illustrations of pet accessories on a white background perfect for any pet owner Envelope included. Card measures 4.625 in. x 6.75 in. Standard postage required. American Greetings offers exceptional greeting cards, gift wrap and celebration products so you can connect in ways that fit your personality and authentic style.