In the book "Lola and the Boy Next Door" by Stephanie Perkins, an important theme addressed is the bias faced by black dogs in shelters, where they are often the last to be adopted. This leads to a higher chance of them being euthanized, highlighting a troubling form of discrimination often called "dog racism." Such prejudices reflect societal stereotypes that unfairly influence shelter decisions and pet adoption practices.

The story uses this issue to shed light on the unjust treatment of black dogs, encouraging readers to challenge their own perceptions and biases. Perkins emphasizes the need for greater awareness and compassion in animal adoption, advocating that all dogs, regardless of color, deserve loving homes and fair treatment.