Vegan doesnt apply to just foods, it applies to many items many people dont even think about. The following ingredients are NOT vegan:
silk, honey, goat's milk, wool, leather, sugar (unless you know it is from a non-charcoal using process), beeswax, emu oil, Coral, Bone, Leather, Pearls (genuine saltwater or freshwater - glass pearls are ok, of course), feathers, milk, butter, angora, mohair, wool, cashmere, shell, gelatin
If you are unsure, feel free to simply ask!