. >> and our animal advocate, jill rappaport, has more on why this continues to happen. good morning. >> this syndrome is so upsetting. it's unbelievable. despite the fact that most of these animals are healthy, beautiful, loving pets, a majority of them will get euthanized simply because they're black. they are sweet, loveable, and often unwanted. >> if you're a black dog and you come to our shelter, your chances of getting adopted is pretty poor. unfortunately. >> reporter: this growing plight is called black dog syndrome. >> black dog syndrome is simply where black dogs get overlooked, and they're euthanized at a much higher rate. >> reporter: from coast to coast, shelters are overrun with animals like these, even puppies who are just discarded because of the color of their fur. all because of what shelters claim are unwarranted misconceptions. >> there are some old wiv's tales that black dogs are mean, and i think one of the biggest problems is they don't photograph well unless you have the right lighting and good photography equipment, so their pictures don't stand o