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Hill's Science Diet Science Diet
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Adult 1+ Adult 1+
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By Health Condition

Senior 11+ Age Defying - Dry

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Hill's® Science Diet®
Senior 11+ Age Defying

Hill's® Science Diet® Senior 11+ Age Defying cat food provides precisely balanced, easy-to-digest nutrition to fight 4 important signs of aging in 30 days.

  • Defends the body and brain against aging
  • Nutrition to improve skin & coat in 30 days*
  • Supports long-term heart & vital organ health
  • Real chicken #1 with natural ingredients and no chicken by-product meal

*Vs. previously fed grocery foods

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Key Benefits

Recommended For:

Senior cats ages 11 and older.

Not Recommended For:

Kittens, pregnant or nursing cats.

BenefitNutrientHow it Works
Agile, alert, interactive catMultivitaminPrecisely balanced nutrition with an exclusive multivitamin blend to fight litter box accidents and help keep older cats agile, more alert and interactive.
Healthy kidneys & heartTaurineTaurine and controlled levels of phosphorus and sodium help maintain healthy kidneys, heart and other vital organs in older cats.
Healthy skin & shiny coatOmega-6 fatty acidsOmega-6 fatty acids and vitamin E promote healthy skin and shiny coat.

Additional Info

Healthy choices matter, for both you and your pet. For more than 70 years, Hill's has been advancing knowledge of how to keep pets their healthiest. That means great-tasting, nutritious food with natural ingredients that helps your cat live a long, happy life.

We make every bag of our dry cat food in our own US facilities with highest quality natural ingredients from North America and Europe. These ingredients must meet our strict requirements for purity and nutrient content, which exceed industry standards.

By choosing Science Diet, you help us provide food to shelter pets 365 days a year.
Learn more at

Other Products to Consider

Science Diet® is available in a wide variety of foods for your cat's unique needs. Canned cat food is available from Science Diet® in several flavors such as delicious Mature Adult Savory Chicken Entrée that your cat will love. Also try Science Diet treats that are sure to please!

Feeding Guide

Daily Feeding Guide:


  • Adjust feeding amounts as necessary to maintain optimal weight. If you are unsure, ask your veterinarian.
  • New to this food? Mix increasing amounts of your pet's new food with decreasing amounts of the old food over a 7-day period.
  • Keep fresh water available at all times!
  • Your pet's nutritional needs may change as they age. Ask your vet at every checkup.
  • Science Diet is available in a wide variety of dry foods, wet foods and treats for your pet's unique needs.
  • To prevent suffocation, keep this bag out of the reach of pets and children.

Feeding transition


Weight of CatAmount per Day
5 lb (2,3 kg) 1/3 cup (40 g) - 1/2 cup (65 g)
10 lb (4,5 kg) 5/8 cup (80 g) - 3/4 cup (95 g)
15 lb (6,8 kg) 3/4 cup (95 g) - 1 1/8 cups (140 g)
Science Diet® Senior 11+ Age Defying Cat Food is formulated to meet the nutritional levels established by the AAFCO Cat Food Nutrient Profiles for maintenance of adult cats.

Average Nutrient and Caloric Content

Dry 4089 kcal/kg (510 kcal/cup)

Dry Matter1
Carbohydrate (NFE)37.8
Crude Fiber1.7
Carnitine560 ppm
Vitamin C109 mg/kg
Vitamin E741 IU/kg
Omega-6 Fatty Acids Total4.21


1The nutrient in the product after moisture is removed. It is used to make direct comparisons of nutrient profiles of products with differing moisture contents.
An eight fluid oz. measuring cup of Senior 11+ Age Defying contains 4.4 oz. by weight.


Chicken, Whole Grain Wheat, Corn Gluten Meal, Brewers Rice, Pork Fat, Dried Egg Product, Chicken Liver Flavor, Dried Beet Pulp, Flaxseed, Wheat Gluten, Lactic Acid, Fish Oil, Calcium Sulfate, Potassium Chloride, Soybean Oil, Choline Chloride, Calcium Carbonate, 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), minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), L-Carnitine, Iodized Salt, Oat Fiber, Mixed Tocopherols for freshness, Phosphoric Acid, Beta-Carotene, Natural Flavors, Dried Apples, Dried Broccoli, Dried Carrots, Dried Cranberries, Dried Peas.

Senior 11+ Age Defying - Dry sd feline senior 052742146201,052742146300,052742146409

Hill's® Science Diet® Senior 11+ Age Defying 4.7 5 91 91
Hill's Science Diet Senior 11+ Age Defying food really helps older cats Our older cat, Rufus, who just turned 12 was looking rough and was just laying around like he did not feel well. We started him on the Hill's Science Diet Senior 11+ Age Defying dry food and within 6 weeks, his coat was fuller and smooth and he had more energy. I highly recommend anyone with older cats try this formula. June 10, 2012
Turns my senior cat into a kitten again My 15 year old cat had been healthy throughout her life. She started acting differently-not herself. She began vomiting a lot & had trouble with using the litter box. I took her to the vet & her blood work came back that her kidneys were slowing down but with the proper nutrition she could have many years ahead of her with a great quality of life. No prescription food though because she could be fine if she had a healthy lifestyle. I asked the man at the local pet store if there was any special sort of food he could recommend. He said he had luck with the Science Diet Age Defying for Senior cats. He reminded me that it came with a guarantee and also that it was developed by veterinarians & who would know more about feeding your pet healthy. I bought a bag and within less than a week the turn around in my cat was fantastic. She got her "kitten face" back again & began to play like she did when she was younger. (We do have 2 younger cats that help to keep her at a good weight by exercising her a lot) Next trip to the pet store I thanked the man & told him how good my cat was doing. Ever since then she has been her old self. No litter box issues or vomiting at all-except an occasional hairball-she is a Maine Coon. May 22, 2013
What a difference! Started feeding Meeka, our 11 year old indoor cat, Hill's Senior Diet Age-Defying formula and within two weeks began to notice an increase in her energy level, more interest in playing and interacting with us and less time spent sleeping. It's as though she has a new lease on life! Love it and will continue to feed it to her. Thanks, Hills Diet, for extending my cat's quality of life. April 20, 2012
Super for older cats Both of my cats are 17 years old and in great health for their age. For at least the past 6 years they have been on Science Diet Hairball Light formula. I switched to the Senior formula 6 months ago because of their age and was worried about the hairballs (one of my cats is very susceptible to them). The age defying formula seems to be fine with hairball control but also made a huge improvement in their coats, no more knots. Since they hit about 16 yrs old knots in the fur has been a problem. This product isn't cheap, but nothing good is. May 16, 2012
My 18 year old Kitty... My Lil Black Kitty was having some intestional issue and hadn't been eating her hard food. After examining her teeth and gums and tongue I saw nothing that would inhibit her consumtion of hard food. I had thought she was getting spoiled by her wet food in her old age and limited that..she noticable became thinner and her fur had lost its upon some research I choose Hill Science Dry food and bought a bag from the local pet store. She ate it up immedietly and kept it down wich was the best thing I could of hoped for. She now enjoys this hard food as her staple as well as the wet food wich might I add there is not a very good selection for old kitties @ the pet store chains nor are there ANY TREATS available. Her fur is full and glossy now she has gained some muscle back and Mommy is no longer worried Thank You Thank you!! May 16, 2012
My 4 cats love it! Although I bought it for my 17-year old cat, Blanca, all 4 of my cats (ranging from 4 to 17 years of age) LOVE it. The small kibble is easy for her to chew. It's keeping her energy high. To give her variety, I also feed her Science Diet's mature adult turkey wet food, which is low in protein. I'm amazed how many other brands have senior cat formulas that are high in protein, which is harmful to their kidneys. February 26, 2013
Great Product!!!! My cat Lady was nine when she got attacked by a dog and lost her back leg. After her second surgery the vet recommended Science diet senior. She is about to celebrate her fourteenth birthday and she loves her Science diet senior. She is in great health and her coat is so beautiful and I owe it all to Science diet senior. April 16, 2014
Age Defying helps my cat stay young! My 13 year old cat, Friday loves Science Diet Senior Age Defying cat food. It helps her to stay active and healthy. My friends all can't believe shes 13 years old! She looks and plays like a much younger cat! I won't feed her anything else! April 27, 2014
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