Black dogs are dogs too.

For the past month, I have been fostering Tommy. Tommy is a sweet lab mix, which we rescued. This dog like many others taught me lessons about life. I've always been an animals lover, rescuing wild birds which I bring to a state licensed rehabilitation, turtles, feral cats... Since I got Tommy, the question which came to mind is why does it appear that there is a prejudice against black dogs. I grew up with a black lab, this is probably why in the first place I felt the need to rescue Tommy. He reminded me of my "Dog". Many rescues that I came in contact as a mean to find him a permanent loving home, kept saying that it would take time as being a bigger size dog and "black". My question is why? Does it matter that much, isn't a dog, a dog? In the world of rescue, this is referred as the "black dog syndrome" or as the "BBD" syndrome (big black dog).