Nanotechnology has the potential to revolutionize veterinary medicine, animal health and other areas of animal production. Second generation nanodevices (e.g., quantum dots, nanotubes, nanoshells, functionalized dendrimers) can potentially target, image, deliver drugs and image cell response to therapy in real time. Nanoemulsions can find application in the delivery of controlled amounts of drugs into the beverage of breeding animals, prevention of bovine tuberculosis, the controlled release of injectable poorly water-soluble drugs and as destroyer of pathogens. Other potential applications of nanotechnology in veterinary medicine and animal health include tissue engineering, treatment of Feline Hyperthyroidism, new tools for molecular and cellular breeding, identity preservation and tracking, animal breeding, multi-colour optical coding for biological assays, the security of animal food products, major impact on animal nutrition scenarios ranging from the diet to nutrient uptake and utilization, modification of animal waste as expelled from the animal, pathogen detection, sensory, surgical aids and many more. Experts are of the opinion that unique developments in nanotechnology will be revolutionising animal health and veterinary medicine and nanotechnology may become the proving ground for untried and more controversial techniques-from nanocapsule vaccines to sex selection in breeding. However, economic and regulatory constraints must still be overcome for nano-based new drugs or therapeutic approaches to become common practice.