Dog bane is a term used to describe any substance or method used to repel or kill dogs. The crossword solutions for the term dog bane are fleas (5 letters), FLEA (4 letters), LICE (4 letters) and mange (5 letters). Fleas are small, wingless insects that feed on the blood of mammals and birds. FLEA infestations can cause skin irritation and discomfort in both humans and animals. LICE are small, wingless insects that live on the skin of mammals and birds. They feed on skin debris and can cause itching and irritation. Mange is a skin disease caused by mites that burrow into the skin and cause intense itching and hair loss.