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Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 1
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 2
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 3
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 4
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 5
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 1
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 2
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 3
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 4
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 5
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 1
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 2
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 3
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 4
Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken || Hill's Science Plan || view 5

Hill’s Science Plan Mature Adult 6+ Large Breed with Chicken

£67.59 GBP
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£3.99 Delivery (Orders up to £59.99)

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Certified and trusted products
Size: 14kg
Description

As a dog ages, its nutritional needs change. Specially created for senior large-breed dogs, offering an adapted energy and nutrient profile that helps support wellbeing through the ageing years.

Why your senior dog will benefit

  • Adapted energy and nutrient profile for senior large breeds.
  • Formulated for dogs aged 6 and over.

Features & specification

  • Complete dry food for senior large breed dogs 6+, chicken.

Delivered across the UK — free delivery on orders over £59.99.

Care

General Care & Storage
To get the most out of your Petszo delivery, please keep the following in mind:

  • Edibles: Keep food and treats tightly sealed and stored in a cool, dry environment.
  • Fabrics & Beds: Gently wipe clean or wash at 30ºC (always check the individual label first). Do not bleach.
  • Safety First: Regularly check toys and accessories for damage and remove them if broken.
  • Note: Always refer to the specific packaging for exact instructions.

Getting the most out of your Petszo order comes down to storing things properly and checking them regularly. Here's what matters.

Food and treats

Keep dry food tightly sealed in a cool, dry place away from direct sunlight. Resealing the bag or transferring it to an airtight container helps stop the fats going stale, which is the usual reason a dog or cat suddenly goes off a food they previously liked.

Opened wet food should be covered and refrigerated, and used within about 24 hours. Serve it at room temperature rather than straight from the fridge — cold food is noticeably less appealing to most pets and can be harder on sensitive stomachs.

Many treat pouches contain a small oxygen absorber sachet to keep the contents fresh. This isn't edible — remove and discard it before giving your pet the treat.

Beds, blankets and fabric items

Most fabric items can be gently wiped clean or machine washed at 30°C, but always check the individual care label first — padding and covers vary between products. Don't use bleach, as residue can irritate skin and paws.

Removable covers are worth washing more often than you'd think, particularly for pets with skin sensitivities.

Toys and chews

Check toys and accessories regularly for damage, and remove anything that's cracked, split or losing pieces. Small fragments are a genuine choking and blockage risk.

Always supervise your pet with chews and rawhide products, and take away any piece small enough to be swallowed whole. Match the chew size to your pet — a chew intended for a small dog won't last long with a large one, and creates more risk.

Harnesses, collars and leads

Check the fit periodically, especially on growing puppies and kittens. As a rule you should be able to slide two fingers comfortably under any strap — tighter risks rubbing, looser risks your pet backing out of it.

Inspect stitching, buckles and clips for wear, and replace anything showing damage before it fails on a walk.

Litter trays and small pet enclosures

Scoop clumping litter daily and top up as needed; a full change every 1–2 weeks is typical, more often with several cats sharing a tray. Clean the tray itself with hot water and mild detergent rather than strong disinfectants, some of which are toxic to cats.

For small pet enclosures, spot-clean soiled bedding daily and do a full change weekly.

Switching foods

Introduce any new food gradually over roughly 7–10 days, mixing increasing amounts into the current food. Sudden changes are one of the most common causes of digestive upset, and it's easily avoided.

Always check the product packaging. The guidance here is general — individual products carry their own storage, washing and feeding instructions, and those take precedence. If you're unsure about something, or your pet has a specific health condition, speak to your vet.

Questions about a specific product? See our FAQ or email support@petszo.co.uk.

FAQ

Frequently Asked Questions (FAQ)
We’ve compiled answers to the most common questions about shopping at PETSZO. Can’t find your question? Contact us at +44 7782 276061 or email us at support@petszo.co.uk.

1. What are your delivery times?
Orders are typically processed within 1–3 business days and spend 2–4 business days in transit. You can generally expect your order to arrive within 3–7 business days total. Once your order is dispatched, you will receive tracking information to monitor its progress.

2. What if my order is late?
While we strive for prompt delivery, carrier delays can occasionally happen. If your order does not arrive within the expected timeframe, please reach out to us. If a package is confirmed lost or significantly delayed by the courier, we will issue a replacement or a refund to ensure your complete satisfaction.

3. Can I return an item?
Yes. In compliance with UK Consumer Law, we offer a 14-day return period for most unused and unopened items in their original packaging. Please check our Refund & Return Policy for details and hygiene-related exemptions.

4. How can I track my order?
After your order is shipped, we will provide tracking details via email. You can use this information to check the delivery status directly with the carrier.

5. How do I contact customer support?
If you have questions about your order, shipping, or products, reach out to our support team:
Phone: +44 7782 276061
Email: support@petszo.co.uk

Answers to the questions we're asked most often. If yours isn't here, call +44 7782 276061 or email support@petszo.co.uk and we'll help.

Delivery

How long will my order take to arrive?

We aim to dispatch orders within 1–7 business days of you placing them. Delivery time after dispatch depends on the shipping method chosen at checkout. You'll receive tracking details by email once your order is on its way, so you can follow its progress with the carrier.

Do you offer free delivery?

Yes — delivery is free on all UK orders over £59.99. Orders below that threshold are charged at the rate shown at checkout before you pay.

Where do you deliver?

We currently deliver within the United Kingdom only. We don't ship internationally at present. Please note that a small number of items are shipped from outside the UK and may take a little longer to arrive — this is noted on the individual product page where it applies.

What if my order is late?

Carrier delays occasionally happen, particularly around public holidays or in bad weather. If your order hasn't arrived within the expected timeframe, get in touch with your order number and we'll chase it. If a package is confirmed lost or significantly delayed by the courier, we'll send a replacement or issue a refund.

How do I track my order?

Once your order ships, we email you tracking details. Use these to check live delivery status directly with the carrier.

Returns & refunds

Can I return something if I change my mind?

Yes. Under UK consumer law you have 14 days from receiving your order to tell us you'd like to cancel, and a further 14 days to send the items back. Items need to be unused, in their original packaging and in the condition you received them. Return postage for change-of-mind returns is at your cost. Full details are in our Refund & Return Policy.

What if my order arrives damaged or incorrect?

We'll put it right. Under UK law you have up to 30 days to reject a faulty item for a full refund. For transit damage, contact us ideally within 48 hours of delivery with photos of both the item and the packaging. We cover return postage on faulty or incorrect items and will offer a full refund or a replacement.

Are there items I can't return?

For hygiene and safety reasons, opened or unsealed pet food and treats, used grooming products, personalised items and gift cards can't be returned unless they're faulty.

How long do refunds take?

Once we've received and inspected your return, we'll let you know whether it's approved. Approved refunds are processed within 14 days of us receiving the goods, back to your original payment method.

Can I cancel an order before it ships?

Yes — email support@petszo.co.uk with your order number any time before dispatch. If it's already gone out, you can return it under the 14-day change-of-mind period once it arrives.

Products

Do I need a prescription for veterinary diets?

No prescription is legally required in the UK to buy veterinary diet foods. However, these products are formulated for diagnosed conditions, so we strongly recommend speaking to your vet before starting one — and having your pet checked at least every six months while feeding it. If your pet's health worsens, seek veterinary advice straight away.

How should I switch my pet to a new food?

Gradually, over roughly 7–10 days. Mix a small amount of the new food into the current one and increase the proportion each day. Switching abruptly is a common cause of digestive upset.

How do I store pet food once it's open?

Keep dry food in a cool, dry place, ideally resealed or in an airtight container to stop the fats going stale. Opened wet food should go in the fridge and be used within about 24 hours. Always check the individual packaging, as some products have specific requirements.

Contact

How do I get in touch?

Phone: +44 7782 276061
Email: support@petszo.co.uk

Please include your order number when contacting us about an existing order — it speeds things up considerably.

Shipping & Returns

Last updated: 16 August 2026

This policy explains how we process, dispatch and deliver orders, and what to do if something goes wrong.

1. Delivery charges

Delivery is free on all UK orders over £59.99. For orders below that value, the delivery charge is calculated and shown at checkout before you complete your purchase — you'll never be charged an amount you haven't seen first.

2. Order processing and dispatch

We aim to dispatch orders within 1–7 business days of the order being placed. Business days are Monday to Friday, excluding UK public holidays.

Once your order has been processed you'll receive a confirmation email, followed by tracking details where available.

3. Delivery times

Time in transit after dispatch depends on the delivery method selected at checkout and your location. Total time to receive your order is therefore the dispatch window above plus the carrier's transit time.

A small number of products are shipped from outside the UK and take longer to arrive. Where this applies, it is stated clearly on the individual product page.

4. Delivery area

We currently deliver within the United Kingdom only. We do not offer international shipping at present.

Please note that a small number of bulky items cannot be delivered to Northern Ireland. Where this restriction applies, it is noted on the product page.

5. Tracking your order

Once your order ships, we'll email you tracking information where available. You can use this to check the live delivery status directly with the carrier.

6. Delays

Some delays are outside our control — carrier backlogs, severe weather, and public holidays being the most common. If your order hasn't arrived within the expected timeframe, please contact us with your order number and we'll investigate.

If a package is confirmed lost or significantly delayed by the courier, we will send a replacement or issue a refund.

7. Incorrect delivery addresses

Please check your delivery address carefully at checkout. If you spot a mistake, contact us immediately — we can usually correct it before dispatch. Once an order has shipped to an address you provided, we may not be able to recover it.

8. Contact us

For any questions about shipping or the status of an order:

Phone: +44 7782 276061
Email: support@petszo.co.uk

Please include your order number — it makes everything faster.

Petszo is a trading name of UZMA QASIM LTD (company number 16856550). We reserve the right to update this policy; the date at the top of this page reflects the most recent revision.

See also: Refund & Return Policy · FAQ

Add to Cart Select The Options Above
  • 5 stars: 15 (65%)
  • 4 stars: 6 (26%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 2 (9%)
S
Selwyn Morris
Good quality dog food

Have been buying Hills for years, our dogs have been healthy and lived to a good age. Dog eats it.

N
Nay

My dog loves this kibble, and I love how quick!

N
Nay
Super speedy delivery!

My dog loves this kibble and I love how quick and efficient the delivery was!

A
Allison
Super food

Good quality dry food, my boy looks great fed on this ☺️

A
Allison
Super food

Good quality dry food, my boy looks great fed on this ☺️

R
Rob
Great dog food but way overpriced

My 2 Rottweilers love this food and why I’m not one to complain the prices are getting ridiculous now. It seems every time I go online to order it’s gone up another £5-£10 it’s past a joke. Looks like shopping around as these are getting more expensive as pets at home.

R
Rob
Great dog food but way overpriced

My 2 Rottweilers love this food and why I’m not one to complain the prices are getting ridiculous now. It seems every time I go online at PetsZo to order it’s gone up another £5-£10 it’s past a joke . Looks like shopping around as these are getting more expensive as pets at home.

R
Rob
Many years.. .

We've been using the Science Plan foods for our dogs ffor many years. We have one dog who has been on them for over 15 years! Jess, our choc lab, has been on it since being diagnosed with elbow displasia at 18months. She'll be 18 at New year.. . We unfortunately lost another of our our labs this time last year at nearly 17. I can confidently say that it keeps them in good condition and is easy to regulate their weight on 2 feeds per day (with appropriate exercise!).

R
Rob
Many years...

We've been using the Science Plan foods for our dogs ffor many years. We have one dog who has been on them for over 15 years! Jess, our choc lab, has been on it since being diagnosed with elbow displasia at 18months. She'll be 18 at New year... We unfortunately lost another of our our labs this time last year at nearly 17.\nI can confidently say that it keeps them in good condition and is easy to regulate their weight on 2 feeds per day (with appropriate exercise!).

M
Mark
Prices are getting ridiculous

I ordered this recently for £34.99 now its £42.99.

M
Mark
Prices are getting ridiculous

I ordered this recently for £34.99 now its £42.99. Every month prices are increasing and now PetsZo are only doing packs of 2 or more so the initial outlay is more expensive per month

A
Anonymous
Excellent food

My dog has always been fed with Hills Science Plan and has recently moved onto the mature 5+ active longevity as she is a Labrador and I wanted to feed her something which would also help keep her joints healthy. Although quite expensive I think it is a quality product and is affordable when ordered rather than buying it in stores.

H
Harry
Excellent food

My dog has always been fed with Hills Science Plan and has recently moved onto the mature 5+ active longevity as she is a Labrador and I wanted to feed her something which would also help keep her joints healthy. Although quite expensive I think it is a quality product and is affordable when ordered through PetsZo rather than buying it in stores. I also like the convenience of having it delivered to my home.

A
Anonymous
change of taste

Our golden retriever has been enjoying this product for quite a while and has always eaten it as soon as she is fed. However Hills announced recently that they had changed the flavour to make it even more tasty. Since they have done this our dog has been very reluctant to eat it and will eventually do so through 'bribery' or because she is very hungry. We may, reluctantly, have to change her food to another brand. We are wondering whether other dog owners have had a similar experience to ours. Please feel free to pass these comments onto Hills.

A
Anonymous
change of flavour

Our Golden Retriever has always liked this product and has eaten it straight away. However Hills announced recently that they had enhanced the flavour. Ever since our dog has been very reluctant to eat it. She will eventually do so when she gets hungry enough. May have to change to a different brand. We wonder whether other dog owners have had a similar experience to ours. Please feel free to pass on these comments to Hills.

I
Isla
change of taste

Our golden retriever has been enjoying this product for quite a while and has always eaten it as soon as she is fed. However Hills announced recently that they had changed the flavour to make it even more tasty. Since they have done this our dog has been very reluctant to eat it and will eventually do so through 'bribery' or because she is very hungry. We may, reluctantly, have to change her food to another brand. We are wondering whether other dog owners have had a similar experience to ours. Please feel free to pass these comments onto Hills.

J
James
change of flavour

Our Golden Retriever has always liked this product and has eaten it straight away. However Hills announced recently that they had enhanced the flavour. Ever since our dog has been very reluctant to eat it.\nShe will eventually do so when she gets hungry enough. May have to change to a different brand. We wonder whether other dog owners have had a similar experience to ours. Please feel free to pass on these comments to Hills.

o
originally published in PetsZo.ie
perfect size

having large dogs brings the problem of ordering enough food to last them a while. with this super sized pack thats not a problem anymore. my doberman has never refused to eat this kibble. even when it arrives he sits next to the box knowing theres something tasty to eat in there.

o
originally published in PetsZo.ie
Perfect for a working dog

My springer was losing weight - it was so active ordinary food was just not providing the nourishment and protein it needed. The vet suggested moving to this and the dog has got stronger and gained weight - but is not fat, so I presume the weight must be increased muscle and all over development.

J
Jack
hills science plan

The food is very good for our two dogs who both love it . We are very happy with this produce and PetsZo company are very efficient and the delivery is extremely good .

o
originally published in PetsZo.ie
Great dogs grubs

I use this food when I can afford it by the sack great for my EBTs but I prefer the 18k so when the good cheaper deals are on... I'm in ;)

A
Anonymous
Great value

My Newfoundland has been on Hills Science Plan, since he was a puppy, and recently moved over to 5+ Mature- Great value here, and much more economic than buying in Spain.

G
George
Great value

My Newfoundland has been on Hills Science Plan, since he was a puppy, and recently moved over to 5+ Mature-\n\nGreat value here, and much more economic than buying in Spain.