It's amusingly true: when you're a talking canine, you have to be careful not to bark out loud what you're actually thinking. Especially when it comes to dirty leg sex thoughts. Any of your friends, relatives and colleagues who are a breed apart and happen to be celebrating a Birthday will be enthusiastically thanking you for your incredible thoughtfulness and amazing sense of hound humor when you gift them this hilarious muttering mutt card in hump happy honor of their latest birth anniversary. Because puppy love is sometimes best left pooch unspoken - and comically and colorfully depicted on a hysterical Birthday greeting.