The North American Veterinary Community, 2014 Animal Industry Spending Estimated at $58.5 Billion, March 2014. Available online at http://navc.com/newsletter/2014-animal-industry-spending-estimated-at-58-5-billion/.
 Available online at http://www.petfoodindustry.com/47982.html.
 American Veterinary Medical Association, U.S. Pet Ownership & Demographics Sourcebook (2012). Available online at https://www.avma.org/KB/Resources/Statistics/Pages/Market-research-statistics-US-Pet-Ownership-Demographics-Sourcebook.aspx.
 Global Pet Expo Press Release, Pet Spending Higher Than Ever with an Estimated $58.5 Billion in Spending in 2014, March 13, 2014. Available online at https://globalpetexpo.org/press/pressrelease_detail.asp?id=135.
 Stylus, Trends in Pet Food, May 22, 2013. Available online at http://www.stylus.com/gmjymn.
 The Advertiser News, Mars PetCare on schedule with Global Innovation Center construction, Jan. 21, 2014. Available online at http://advertisernews.biz/news/mars-petcare-schedule-global-innovation-center-construction.html.
 UCDavis, Homemade dog food recipes can be risky business, study finds, July 15, 2013. Available online at http://www.news.ucdavis.edu/search/news_detail.lasso?id=10666.
 Today @ Colorado State, Pet Health: Raw food diets come with risks, and claims of nutritional benefits are unfounded, June 10, 2014. Available online at http://www.today.colostate.edu/story.aspx?id=10178.
 The Huffington Post, Stem Cell Therapy For Dogs Unleashing Hope, Angst, May 26, 2013. Available online at http://www.huffingtonpost.com/2013/05/26/stem-cell-therapy-dogs_n_3338007.html.
 INRA Science and Impact, Nanotechnology in veterinary medicine, March 8, 2013. Available online at http://presse.inra.fr/en/Resources/Press-releases/Nanotechnology-in-veterinary-medicine.
 Oyama MA., Using cardiac biomarkers in veterinary practice. Originally published at the Veterinary Clinics of North America: Small Animal Practices Journal, Nov. 2013. Available online at http://www.ncbi.nlm.nih.gov/pubmed/24144089#.
 The New York Times, Start-Ups Work on Biotech Drugs for Pets, Aug. 1, 2014. Available online at http://www.nytimes.com/2014/08/02/business/biotechnology-for-treating-dogs-and-cats.html?emc=edit_tnt_20140801&nlid=20715162&tntemail0=y&_r=0.
 Bloomberg Businessweek, Pet Meds: Tested on Humans, Safe for Animals, July 21, 2014. Available online at http://www.businessweek.com/articles/2014-07-21/pharmaceuticals-for-cats-dogs-and-horses-is-recession-proof.
 The New York Times, Pfizer Spins Off Animal Health Unit in $2.2 Billion I.P.O., Jan. 31, 2013. Available online at http://dealbook.nytimes.com/2013/01/31/pfizer-spins-off-animal-health-unit-in-2-2-billion-i-p-o/?_php=true&_type=blogs&_php=true&_type=blogs&_r=1.
 For more information, see https://www.zoetis.com/innovation-outcomes.
 SFGate, In innovation, Big Heart Pet Brands barks up the right tree, July 23, 2014. Available online at http://www.sfgate.com/pets/article/In-innovation-Big-Heart-Pet-Brands-barks-up-the-5636782.php.