Hill’s Science Diet Cat Food Review

WebsiteHill’s
Available fromPet Circle   Jumbo Pets

It doesn’t take much science to understand wheat, corn, and rice aren’t applicable to an obligate carnivore, yet all of these grains feature in Science Diet for carnivorous cats. It makes you wonder why they tout the word “Science” so readily, but science is a very loose term and doesn’t have to have much relation to the product. Researching how much grain to give a cat without comeback for any ill effects happens to be science. Just sayin’.

Vets religiously defend this brand. Perhaps that stems from Hill’s longstanding involvement in veterinary studies, or scientific research initiated by Hill’s readily believed without scrutiny, or it could be because Science Diet is actually better for cats than the many nasty chemically-preserved cereal by-product cat “foods” you can buy at the supermarket. But on a fundamentally basic level, wheat, corn, and rice are indisputably not suited to an obligate carnivore.

Hill's Science Diet Cat Food Review

Let’s delve a little deeper into the Adult 1-6 formula which targets an age range where the likes of renal failure hasn’t reared it’s ugly head (yet).

The three main ingredients are chicken (weighed prior to cooking off approx. 70% moisture), wheat, and corn. Once cooked the chicken will be relatively lackluster, making the wheat and corn more significant. Wheat happens to be one of the most prominent allergens, particularly from wheat mites, and corn is an ingredients linked this year (2020) to canine megaesophagus due to crop disease.

Hill's Science Diet Cat Food Review

It’s not often considered, but cats generally eat to satiate. They don’t over eat. So why do we see so many Fat Cats (like the guy in the pic)? If you give a cat a meat diet they’ll never be fat, but if you force them to churn through a food full of grains to get the nutrition they need from the sparse meat content, then they’re forced to over eat. They can’t process grains, so the carbohydrates turn to sugar causing weight gain, diabetes, organ failure, and so on.

There’s little good to say about this food from an ingredients standpoint. It’s not a diet we would logically consider feeding a carnivore. But what would you expect from a company like Colgate-Palmolive as the conglomerate behind Hills.

Hill's Science Diet Cat Food Review

All I can say is this – cats are carnivores, feed them meat. It’s not a hard concept to grasp.

This food gets a marginally higher rating than supermarket junk, but it’s still ridiculously priced for what is essentially a bag of wheat and corn targeted at a carnivorous animal.

Ingredients

Chicken, Whole Grain Wheat, Corn Gluten Meal, Chicken Fat, Chicken Meal, Dried Beet Pulp, Brown Rice, Chicken Liver Flavor, Calcium Sulfate, Lactic Acid, Potassium Chloride, Fish Oil, Soybean Oil, Iodized Salt, Choline Chloride, vitamins (Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate (source of Vitamin C), Niacin Supplement, Thiamine Mononitrate, Vitamin A Supplement, Calcium Pantothenate, Riboflavin Supplement, Biotin, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Vitamin D3 Supplement), Taurine, minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Oat Fiber, Mixed Tocopherols for freshness, Natural Flavors, Beta-Carotene, Apples, Broccoli, Carrots, Cranberries, Green Peas.

4 Total Score
Wheat, rice, and corn, for carnivores? Is that science?

CONS
  • Wheat
  • Rice
  • Corn
  • High price tag
David D'Angelo

David D'Angelo has worked as a scientist since graduating with a BSc (Hons) in 2000. In addition, David holds a CPD accredited Diploma in Pet Nutrition as well as being CPD accredited VSA (Veterinary Support Assistant). However, his experience and involvement in the pet food industry for 15+ years has given true insight into pet food, formulations, science, research, and pet food marketing. Facebook | LinkedIn | Instagram | Pinterest

10 Comments
  1. Yes, i have to agree. You pay a fortune for that food and receive fillers, such as rice in it. What i also would like to find out is why so many cat foods, such as Hills are based on chicken.

    • Hi Chris, generally chicken is used based on availability and price. But when it comes to Hills I often find they’re based mostly on non-meat ingredients rather than meat…!

  2. Having serious doubts about Hills Tender Chicken. He vomits and that’s always what it looks like. (He also gets chicken liver, kidney, fish and Coles’ chicken rartare)

  3. What do Hills or the RSPCA say about this? Love to ask them about it! Great site by the way

  4. My 2 kitten’s have been eating this food at the rspca , do you think it will be hard for them to change foods onto something different , these are my first kitten’s, i don’t know about cat food

    • Supposedly cats are very hard to switch foods with, if you have trouble check catinfo.org very helpful website that I used to go to a lot and suggest to a lot of people.

      • They like a little nibble of the dogs ziwipeak dried squares , but only a little not a whole meal

        • I guess that’s always a good thing, might make changing them over easier, but I’ve read stories where the cats loved the dogs food so much the people went out and got the cat variety of that same formula and the cats wouldn’t touch it XD. I guess try it out and let us know how it works and use the website if you need it.

  5. Your ingredient list is markedly different from the actual ingredient list for Adult Indoor:

    http://www.hillspet.com.au/products/sd-feline-adult-indoor-dry.html

    Ingredients

    Chicken, Whole Grain Wheat, Corn Gluten Meal, Pork Fat, Powdered Cellulose, Pea Bran Meal, Dried Egg Product, Wheat Gluten, Dried Beet Pulp, Chicken Liver Flavor, Lactic Acid, Soybean Oil, Calcium Sulfate, Potassium Chloride, Fish Oil, Choline Chloride, Iodized Salt, Taurine, vitamins (Vitamin E Supplement,L-Ascorbyl-2-Polyphosphate (source of vitamin C), Niacin Supplement, Thiamine Mononitrate, Vitamin A Supplement, Calcium Pantothenate, Riboflavin Supplement, Biotin, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Vitamin D3 Supplement), L-Carnitine, minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Oat Fiber, Mixed Tocopherols for freshness, Phosphoric Acid, Beta-Carotene, Natural Flavors, Dried Apples, Dried Broccoli, Dried Carrots, Dried Cranberries, Dried Peas.

    Perhaps you wrote your review based on an older recipe for Adult Indoor. Your review isn’t dated so it’s hard to tell.

    • Reply
      Pet Food Reviews (Australia) March 25, 2015 at 7:48 am

      Thanks Matt, recipes do change over time so thanks for letting me know. I’ve updated the review.

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