Venom from otherwise poisonous creatures could give birth to new line of cancer treatment drugs.Photo courtesy of ShutterstockResearchers found the proteins and peptides inside venom can attach to cancer cells that promote tumor growth while not harming the surrounding healthy cells. The side effects of the toxins eliminate or reduce unwanted reactions, such as damages to the heart muscles, nerve cells, clotting, or even bleeding under the skin. The venom has the ability to block the growth and spread of the disease.