Hill's Science Diet Senior Adult 7+ Perfect Digestion Chicken Dry Dog Food, 22-lb bag

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At a Glance

  • Sensitive Digestion
  • Digestive Health
  • Made in USA
  • Senior
  • All Breeds

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About This Item

Details

  • This senior food is formulated to help balance your buddy’s gut microbiome and help them produce healthy poop in as little as 7 days.
  • The irresistibly delicious kibble is made with complete, balanced nutrition to help your senior feel healthy and happy.
  • Includes a specially chosen blend of prebiotics that help promote regularity and healthy stools.
  • This senior dry food features ActivBiome+ technology, which contains an exclusive blend of prebiotics, whole-grain oats, and pumpkin.
  • The food also features high-quality chicken as the #1 ingredient for excellent protein and yumminess.

Ingredient Information

Feeding Instructions

Learn More About Hill's Science Diet From Our Team of Experts

Science Diet Senior Dog Nutrition

Hill’s Science Diet senior foods are gentle on aging kidneys and joints, with the right balance of nutrients for an aging heart.

ActivBiome+ Multi-Benefit Upgrade

Only Science Diet foods feature ActivBiome+ Multi-Benefit—a special blend of immune system-supporting antioxidants and gut-healthy prebiotic fibers. Hill’s is always working to keep pets healthier for as long as possible.

Quality Ingredients. Tasty Flavors.

Science Diet senior foods offer nutrients to keep them healthy and flavors to keep them happy. Whether your dog prefers crunchy kibble or savory stews, these foods have the textures and flavors that deliver satisfaction.

Recommended by Veterinarians

Hill’s is a leader in cutting-edge food science and research, trusted and recommended widely by vets everywhere.

About Hill’s Science Diet

In 1948, Hill’s changed the pet nutrition world by launching the first veterinarian-prepared food for a pet’s specific health needs. Seven decades and thousands of innovations later, they are still leading the charge in science-led nutrition.

Shop Hill’s Science Diet

Frequently bought together

Questions & Answers

13 Customer Questions

My sheltie has just turned 8 and has been on hills easy digestion salmon since 1 years….why does he need to switch to the senior chicken formula

does hillscience diet have BHA

Answer by Chewy • Nov 19, 2021
Hill's has converted to alternative preservatives for its products. At this time, they do not use BHA/BHT in any products. Hill's uses mixed tocopherols for freshness which is a natural vitamin E preservative.

What is the phosphorus content of this food?

Answer by Chewy • Jul 17, 2021
This recipe has a phosphorus content of 0.65% on a dry matter basis.

what is the sodium %?

Answer by Chewy • Apr 24, 2022
This recipe has a sodium content of 0.32% on a dry matter basis.
Reviews
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4.7
Rated 4.7 out of 5 stars
605 Ratings
Terms & Conditions

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Digestibility

89% Positive

Ingredients

86% Positive

Nutritional Value

89% Positive

Palatability

86% Positive

228 Customer Reviews

Rated 4 out of 5 stars
By Terri on Jan 21, 2026

Please offer a middle sized bag

So my dog likes this just fine. It’s great for his tummy. However, if I get the more economical 22lb bag, by the end it’s stale and I can barely get him to eat it

So my dog likes this just fine. It’s great for his tummy. However, if I get the more economical 22lb bag, by the end it’s stale and I can barely get him to eat it. I finally after many years of buying it, realized he tends to get sick at the end of the bag. And yes, I keep it in a stay fresh container. So now I’m spending almost twice as much on the small bag so that he can have fresher food. Most of the others offer like a 10 or 15 lb bag. Please offer a middle size!

Rated 4 out of 5 stars
By Blondie on Nov 10, 2025

She loves the taste!

Ok I can't give a very detailed review yet, I'm still in the middle of switching out my girls food. She's been having some awful diarrhea issues and our vet put

Ok I can't give a very detailed review yet, I'm still in the middle of switching out my girls food. She's been having some awful diarrhea issues and our vet put her on prescription Hills Science Digestion Care id, she's been on that for a couple of months and I'm slowly, VERY slowly mixing and swapping the Rx food for this, I'm hoping her belly agrees with only this without the need for prescription. If not I'll keep her on the prescription food. I really do hope this works, prescription food is expensive and this is so much more affordable. She really likes the taste of this and yes, she is a picky eater. If she doesn't like something she just won't eat it, that hasn't been an issue since I introduced this. It's affordable, comes in a 3.5lb bag so this will last almost a full month, maybe longer. I love how Hills Science has the velcro closure! I was a little worried that the kibble would be too big for her little mouth but it's not. She'd been on Royal Canin for Shih-tzu's for over 6 years, I never would've switched her but with the constant diarrhea we didn't have a choice, I'll try anything to get her back to normal. Thank you Chewy for being so awesome and thank you Hills Science for having so many options for my girls needs!

Rated 4 out of 5 stars
By BD on Jan 21, 2026

Immediate Difference in Digestion

As my dog has gotten older her digestive needs have changed. Switching over to Hills Senior Perfect digestion made an immediate difference. Now she doesn’t have

As my dog has gotten older her digestive needs have changed. Switching over to Hills Senior Perfect digestion made an immediate difference. Now she doesn’t have any trouble keeping her meals down and her appetite has returned.

Rated 4 out of 5 stars
By Ashley on Nov 26, 2025

Digestion

Dog has digestion issues and he used to get really constipated all the time with this food. He is actually going and he doesn’t go into episodes of pika. He is acting

Dog has digestion issues and he used to get really constipated all the time with this food. He is actually going and he doesn’t go into episodes of pika. He is acting way better.

Rated 5 out of 5 stars
By Leigh on Nov 1, 2025

Product is good

the product is what my dog needs in his diet. It is one of three components to his twice a day feeding which include 2 prescription Hill Diet products besides this

the product is what my dog needs in his diet. It is one of three components to his twice a day feeding which include 2 prescription Hill Diet products besides this product

Rated 1 out of 5 stars
By Rowenna on Sep 17, 2025

Diarrhea

We adjusted slowly, but he’s had diarrhea multiple days in a row. His poops were perfect but now they’re runny and yellow! My poor boy, who never goes in the house,

We adjusted slowly, but he’s had diarrhea multiple days in a row. His poops were perfect but now they’re runny and yellow! My poor boy, who never goes in the house, has had diarrhea two nights in a row and i’ve woken up to it. Will be switching back to our old food:(

Rated 1 out of 5 stars
By RONALD on Oct 4, 2025

Look elsewhere

This is the 3rd time I have tried to use a Hill's Science Diet pet food in about 40 years. Each and every time either my dog refused to go near it, and if they did

This is the 3rd time I have tried to use a Hill's Science Diet pet food in about 40 years. Each and every time either my dog refused to go near it, and if they did they got sick from it. I'm done.

Rated 4 out of 5 stars
By Mary on Sep 16, 2025

Okay for him, not for her

Though not enthusiastic, Kip eats this dog food. Darla tried it and got terrible diarrhea. I bought Acana for her and she is good. Kip will finish the Hill's and

Though not enthusiastic, Kip eats this dog food. Darla tried it and got terrible diarrhea. I bought Acana for her and she is good. Kip will finish the Hill's and then transition to Acana. I keep trying to find something they both enjoy.

Rated 5 out of 5 stars
By Barbara on Nov 28, 2025

My dog love this!

He’s been a picky eater and has had digestive problems, but he seems to be doing better on this food.

He’s been a picky eater and has had digestive problems, but he seems to be doing better on this food.

Rated 5 out of 5 stars
By Jennifer on Nov 23, 2025

Fast delivery on hard to find item

Special food for my dog is so hard to find in store, but it came very quickly and the price was great!

Special food for my dog is so hard to find in store, but it came very quickly and the price was great!