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PURINA PRO PLAN Large Athletic Puppy Healthy Start

£69.59 GBP
 per 

£3.99 Delivery (Orders up to £59.99)

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Certified and trusted products
Size: 12kg
Description

In order for a young four-legged friend to develop into a healthy adult dog, it needs food during the growth phase tailored to puppy nutritional needs.

Please note: this product was formerly named OPTISTART — same formula, new name.

Why your puppy will benefit

  • Tailored specifically to the nutritional needs of large breed puppies.
  • Supports healthy development in the growth phase.

Features & specification

  • Complete dry food for large athletic breed puppies.

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

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  • 5 stars: 20 (100%)
  • 4 stars: 0 (0%)
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K
Karen
Flavours

Hi,\n\nI’ve a very active 9 month old puppy who goes through fazes of eating won’t eat, I got this he loved it, but now a few weeks in he’s not eating it. To be totally honest I’d get fed up of the same thing very day. I don’t want to change his food again. But he’s a Romanian Shepard and they often become intolerant to chicken. Is there another flavour I can purchase anywhere? Lamb, Salmon. Just to give him a bit of variety? \nThank you

C
Claire
Excellent

The breeder used Purina pro plan athletic puppy and I continued my Labrador on it, he’s always loved it, is in great condition and I’ve never had any problems with it\nI’m changing now, only because I need some big boy food!\nHighly recommend

R
Roz
Excellent puppy food

This food provides an excellent start in life for puppies. My 6 month old Labrador is always full of energy, has a glossy coat and maintains a prefect weight on this food. I highly recommend it.

S
Sophia
Great food

A good quality food at a competitive price. My pup's coat is in great condition and general health is good. Recommended.

S
Sarah Reid
Dobermann pup

Our breeder recommended this to us, our pup loves it. , healthy full of life with such a shiny coat.

k
kate goodspeed
Brilliant

our breeder advised us to feed our german sheperd puppy on pro plan large athletic,we are so glad she did because our pup loves it.she is full of energy lovely muscletone and the shiniest coat ive ever seen.she also advised us to buy it from PetsZo,good prices and excellent service

M
Mrs .A .Pye
gsd puppies

we feed our gsd puppies on proplan large breed athletic and we have wonderfull results \nwe feed the dam on it for a start as it goes through the milk while the puppies are feeding and then start weening our pupps on it \nthey are 2/5 wks old and they are very active \nwe give our byuers a puppy pack \nand recomend to go on to your website to order there 14kg bag as they can feed there puppy on untill 2years of age \n would not feed any thing elze to our pups \n it is within one of the best foods \n was even asked by pet shop owner who sells it \n asking what i was feeding our pups on told her they have a bullmastif pup and she is going to feed it on proplan how good is that \ncant get any better

M
Mat
akita

I feed this my akita inu puppy .. she love that and this dogs are very fussy.. coat is shiny and she has lots of energy... for sure will not change.. before she was on royual canin but i see this suit her better

Y
Yvette Wilson
Superb

Having Bred Setter's and used Science Plan previously, I was tempted to try Pro Plan for my newest puppy. At six months, her coat has a brilliant black shine that others in the showing world look on in envy. Her body mass is good and energy levels as they should be. We never have upset tummies and her bowl is cleared within minutes. Although Pro plan is the top end of the market, cost wise, it has to be said you definitely get what you pay for. I will never try anything else, well done.....

P
PAULINE
DOG FOOD

HI TRYED A LOT FOR DOG FOOD FOR MY RIDGEBACK ALL MADE HER SICK OR UPSET TUMMY NOT GOOD. SOME SHE WOULD NOT EAT FOR DAYS. THIS IS THE BEST HER TEETH AND BREATH ARE GREAT AND HER COAT AND THIS IS THE BET PLACE TO BUY IT .

O
Oliver
FANTASTIC

We have always had GSD's and have had lot's of trouble with their eating habits. Upset tummies, sickness, taking a long time to eat the food. We had given them the food prescribed by the breeders for each dog, but in every case we had lots of trouble with it.\n\nThen we got our Barney, the breeder told us to give him Purine Pro-plan - large puppy - athletic.\n\nHe has never looked back, he loves it, no sickness, no upset tummy, he refuses to go out first thing in the morning until he has had his breakfast. He has gone from a little bundle of fur to a beautiful specimen of fun. He is a joy to behold. I was dreading the eating habits when we got him but thanks to Purina we never had a problem.

L
Lily
Superb Results!!!

We have been using Pro Plan Puppy Large Athletic on our 21 month old Rhodesian Ridgeback since he was 6 months old as advised from our breeder. His physhic is remarkable as well as his coat has such a glossy shine to it and feels great! He just looks absolutely stunning!!

L
Lynne
Good Quality

We feed our 10 month old boxer on Proplan Athletic Puppy. The main noticable thing is how shiny his coat is. Boxers can be prone to skin conditions and his skin is perfect. He has developed great muscle tone. I would never feed him anything else!

C
Charlie
Highly recommended

Breeder advised us to use this and we can see why, the dog is so fit and health, and has a wonderful coat - we'd recommend it to any one with a GSD

S
Simon Eaton
Would never change....

My Breeder recommended Pro Plan Athletic from the very start and I can see why! My Rhodesian Ridgeback absolutely loves the stuff. His coat is very smooth & shiny and his muscle tone looks to be brilliant! Cant beat it!

G
Gemma Stockton
Brilliant

My boxers were on Royal Canin which was fine but I decided to change them to Pro Plan as I had been interested in pro plan for a while and what a difference it made, my boy really toned up and looks fantastic & his coat is gleaming!

S
Steve Goode
The only food I trust completely

All of our dogs have been on this and have never had any skin, coat or health problems. The new Labrador puppy just loves it.

J
JANE HOLT
excellent

we changed our boxer puppy to this food as he would not eat nutro any longer, he absolutely loves this food and can't get enough, and he looks really good, with a lovely shiny coat.

j
julie
Impressed

Heeps the weight on our very very active pointer

T
Thomas
Top Quality

our dobe has been on this food since he came home, he cant get enough and look fantastic!