This page includes resources that I talk about and use for my research.

This is a new page, and I will add to it as I use these resources in my content.

Click each category below to scroll to its section.

+ Nutrition

+ Raw feeding

+ Commercial cat food

+ Health

+ Litter


Vegan cat. Guillermo Díaz. MV, “There’s No Such Thing as a Vegan Cat.” Feline Nutrition Foundation.

Carbs and cats. Dr. Lisa Pierson, “Feeding Your Cat.”

Synthetic phos vs natural phos. Alexander J, Stockman J, Atwal J, Butterwick R, Colyer A, Elliott D, Gilham M, Morris P, Staunton R, Renfrew H, Elliott J, Watson P. Effects of the long-term feeding of diets enriched with inorganic phosphorus on the adult feline kidney and phosphorus metabolism. Br J Nutr. 2019 Feb 14;121(3):249-269. doi: 10.1017/S0007114518002751. Epub 2018 Dec 21. PMID: 30572965; PMCID: PMC6390406.

Scripture clean and unclean foods. “CLEAN” or “UNCLEAN” FOOD in today’s context.

Wild cats eat 5-7 prey. Plataforma SINC. “Big Predatory Mammals Such As Felines Need Between 5 And 7 Different Types Of Prey To Meet Their Dietary Needs.” ScienceDaily. ScienceDaily, 16 July 2008.

Small Animal Clinical Nutrition book. Mark Morris Institute free chapter downloads.

Cats are obligate carnivores. Margaret Gates, “Answers: What Exactly is an ‘Obligate Carnivore?'”. Feline Nutrition Foundation.

Cats lack amylase in saliva. Jean Hofve, DVM, “Digestive Enzymes.” IVC Journal.

Kibble vs cooked vs raw beef. Kerr KR, Vester Boler BM, Morris CL, Liu KJ, Swanson KS. Apparent total tract energy and macronutrient digestibility and fecal fermentative end-product concentrations of domestic cats fed extruded, raw beef-based, and cooked beef-based diets. J Anim Sci. 2012 Feb;90(2):515-22. doi: 10.2527/jas.2010-3266. Epub 2011 Oct 14. PMID: 22003235.

Carrageenan study. Tobacman JK. Review of harmful gastrointestinal effects of carrageenan in animal experiments. Environ Health Perspect. 2001 Oct;109(10):983-94. doi: 10.1289/ehp.01109983. PMID: 11675262; PMCID: PMC1242073.

Become a pet nutrition champion. American Animal Hospital Association. They changed the link to force a login. But the link I have is a cached page.

EFA deficiency in cats. MacDonald ML, Anderson BC, Rogers QR, Buffington CA, Morris JG. Essential fatty acid requirements of cats: pathology of essential fatty acid deficiency. Am J Vet Res. 1984 Jul;45(7):1310-7. PMID: 24049889.

EFA supplements for osteoarthritis. Corbee RJ, Barnier MM, van de Lest CH, Hazewinkel HA. The effect of dietary long-chain omega-3 fatty acid supplementation on owner’s perception of behaviour and locomotion in cats with naturally occurring osteoarthritis. J Anim Physiol Anim Nutr (Berl). 2013 Oct;97(5):846-53. doi: 10.1111/j.1439-0396.2012.01329.x. Epub 2012 Aug 11. PMID: 22882740.

Potential adverse effects EFAs. Lenox, C.E. and Bauer, J.E. (2013), Potential Adverse Effects of Omega-3 Fatty Acids in Dogs and Cats. J Vet Intern Med, 27: 217-226.

Carnivore Connection paper. Debra L. Zoran, DVM, PhD, DACVIM, “The carnivore connection to nutrition in cats.” Timely Topics in Nutrition, JAVMA.

Carnivore fantasy. Verbrugghe, A.; Hesta, M. Cats and Carbohydrates: The Carnivore Fantasy? Vet. Sci. 2017, 4, 55.

Raw feeding

Raw feeding pathogen transmission survey. Nicole Renee Cammack, Ryan Michael Yamka and Vicki Jean Adams, “Low Number of Owner-Reported Suspected Transmission of Foodborne Pathogens From Raw Meat-Based Diets Fed to Dogs and/or Cats.” Front. Vet. Sci., 12 October 2021 Sec. Animal Nutrition and Metabolism.

Raw feeding not a significant source of infections. University of Helsinki. “Feeding pets raw food is not considered by pet owners as a significant source of infections.” ScienceDaily. ScienceDaily, 6 September 2019.

Bloodwork changes on raw. Lyn Thomson, BVSc DipHom, “How Raw Food for Cats Affects Blood Test Results.” Feline Nutrition Foundation.

Kitten study wet vs raw digestibility. Hamper, Beth Alair, “Nutritional Adequacy and Performance of Raw Food Diets in Kittens.” PhD diss., University of Tennessee, 2012.

Sand cats study kibble vs raw digestibility. S D Crissey 1, J A Swanson, B A Lintzenich, B A Brewer, K A Slifka, “Use of a raw meat-based diet or a dry kibble diet for sand cats (Felis margarita).”

IBD study wet vs raw. Angela G. Glasgow, DVM; Nicholas J. Cave, BVSc, MACVSc; Stanley L.
Marks, BVSc, PhD, Dip. ACVIM (Internal Medicine, Oncology), Dip. ACVN; Niels C.
Pedersen, DVM, PhD, Center for Companion Animal Health, School of Veterinary
Medicine, University of California, Davis, California, “Role of Diet in the Health of the Feline Intestinal Tract and in Inflammatory Bowel Disease.” Center for Companion Animal Health, UC Davis.

Raw rabbit in diets. Tammy J. Owens, Andrea J. Fascetti, C. Christopher Calvert and Jennifer A. Larsen, “Rabbit Carcasses for Use in Feline Diets: Amino Acid Concentrations in Fresh and Frozen Carcasses With and Without Gastrointestinal Tracts.” Front. Vet. Sci., 21 January 2021
Sec. Animal Nutrition and Metabolism.

Commercial cat food


AAFCO feeding trials.

AAFCO nutritional needs proposed revision 2014.

FDA label guide.

FEDIAF nutritional guidelines.

NRC Your Cat’s Nutritional Needs.

Feed-grade vs human-grade. Susan Thixton, “The differences between pet feed and pet food.”

By-products, 4D meats. Geoffrey S. Becker, “Animal Rendering: Economics and Policy.” CRS Report for Congress.

AVMA sponsors.

Cat food label guide. My full guide includes text, video, and resources.

Flavor enhancer palatants. MARY ROACH, “THE CHEMISTRY OF KIBBLE.” Popular Science magazine.

Dry pet food flavor enhancers. Samant SS, Crandall PG, Jarma Arroyo SE, Seo HS. Dry Pet Food Flavor Enhancers and Their Impact on Palatability: A Review. Foods. 2021 Oct 27;10(11):2599. doi: 10.3390/foods10112599. PMID: 34828880; PMCID: PMC8622411.

Hill’s Prescription food lawsuit summary. Susan Thixton, “Significant Hill’s Prescription Pet Food Lawsuit Will Continue.” TruthAboutPetFood.

Hill’s Prescription food lawsuit court document.

Hill’s food class action lawsuit excessive levels of vitamin D. Top Class Actions, “Hill’s Pet Food $12.5M Class Action Settlement.”

Heavy metals in pet food. Patti Atkins, Tina Restivo, Bob Lockerman, “Heavy Metals in Pet Food: Changes in Heavy Metal Contamination in Pet Food Over the Past Decade.” Spectroscopy.

Worst ingredients. Rick Dunn, “Worst Pet Food Ingredients.” Compiled by Dr. Lisa Newman, N.D., Ph.D, Mike Adams, and Consumer Wellness Center.

Color dyes cause cancer. Kobylewski S, Jacobson MF. Toxicology of food dyes. Int J Occup Environ Health. 2012 Jul-Sep;18(3):220-46. doi: 10.1179/1077352512Z.00000000034. PMID: 23026007.

MARS acquires NomNomNow. Jordan Tyler, “Nom Nom Now acquired by Mars Petcare”. Pet Food Processing.

MARS acquires Champion (Orijen and Acana). “Mars Petcare to Acquire Champion Petfoods, Maker of ORIJEN and ACANA”. MARS website.


Plastic traps bacteria. James Andrews, “Study: Reusable Plastic Produce Containers Harbor Bacteria Even After Being Cleaned, Sanitized.” Food Safety News.

Declawing cats procedure. Dr. Karen Becker, “This Can Emotionally Scar Your Pet for Life — Please Avoid at All Costs.”

Countries that ban declawing. Dr. Christianne Schelling,

Overweight and obese cats in US. Association for Pet Obesity Prevention.

Gum disease in cats. Dr. Karen Becker, “Up to 80% of Cats Suffer This Permanent Condition by Age 3, Does Yours?”

Cats die in 80s due to taurine deficiency. THOMAS H. MAUGH II, “Thousands of Cat Deaths Traced to Pet Food Deficiency.” LA Times.

Dr. Hodgkins’ feeding diabetic cats patent. Dr. Elizabeth Hodgkins, “METHOD AND COMPOSITION TO PROTECT AN OBLIGATE CARNIVORE FROM A DISEASE OF ABNORMAL CARBOHYDRATE METABOLISM.” United States Patent Hodgkins.

Body condition score card. World Small Animal Veterinary Association.

Cat’s sense of smell. “The Amazing Sense of Smell” Cats International.

Cat grass benefits. Lynn Buzhardt, DVM, “Where the Green Grass Grows: Grass Treats for Cats.” VCA Hospitals.

Pink biofilm. “What is that Reddish-Pink Residue in my Toilet, Shower, or Pet’s Dish?”

Vet and horse trainers sentenced to prison for doping horses. “New York Veterinarian And Racehorse Trainers Sentenced To Prison In Federal Doping Case”. U.S. Attorney’s Office, Southern District of New York.

NIR laser therapy for cats with stomatitis. Paolo Squarzoni, Daniele Bani, Francesca Cialdai, and Monica Monici, “NIR Laser Therapy in the Management of Feline Stomatitis”, SM Dermatology Journal.

LLLT protocols. Jenny Hunt BVSc MRCVS, “MLS© LASER PROTOCOLS”, Celtic SMR Veterinary.


Bentonite nanoparticles leads to respiratory issues. Masoudi F, Naghizadeh A, Zardast M, Gholami A, Farrokhfall K, Foadoddini M, Mehrpour O. Effects of bentonite nanoparticles inhalation on lung tissue and blood antioxidant indices in a rat model. Toxicol Ind Health. 2020 Jan;36(1):11-21. doi: 10.1177/0748233719900841. PMID: 32096459.

Silica dust leads to silicosis, lung cancer, kidney disease. Silica, Crystalline Health Effects, Occupational Safety and Health Administration United States Department of Labor.

Wood dust causes cancer. Proposition 65, The Office of Environmental Health Hazard Assessment,

GE corn and soy in the US. “ABOUT GENETICALLY ENGINEERED FOODS” Center for Food Safety.

Aflatoxin mold risk. Susan Thixton, “Caution To Use Of Corn Based Cat Litters.” Truth About Pet Food.

Wheat causes inflammation. de Punder K, Pruimboom L. The dietary intake of wheat and other cereal grains and their role in inflammation. Nutrients. 2013 Mar 12;5(3):771-87. doi: 10.3390/nu5030771. PMID: 23482055; PMCID: PMC3705319.

Soy risks. JILL C. NIENHISER, “Studies Showing Adverse Effects of Isoflavones, 1950-2013.” The Weston A. Price Foundation.

Aflatoxin less likely in walnut shells. Ostadrahimi A, Ashrafnejad F, Kazemi A, Sargheini N, Mahdavi R, Farshchian M, Mahluji S. Aflatoxin in raw and salt-roasted nuts (pistachios, peanuts and walnuts) sold in markets of tabriz, iran. Jundishapur J Microbiol. 2014 Jan;7(1):e8674. doi: 10.5812/jjm.8674. Epub 2014 Jan 1. PMID: 25147653; PMCID: PMC4138677.

Is clumping litter bad for cats? My full guide and review on all types of litters.