Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

When to Switch a Great Dane From Puppy to Adult Food? Vet Approved Guide

Two great danes on the sofa

Dogs are similar to children in that one moment, they’re a puppy, then you blink, and they’re all grown up. And like children, dogs will have different nutritional needs to be met as they get older. That means it’s smart to know when to switch a dog from a puppy food to adult food.

In the case of larger dog breeds, you’ll find most recommendations say to switch from puppy to adult food at 12 months of age. However, it’s different in the case of the Great Dane. Though this giant breed tends to grow very quickly, it doesn’t actually mature until much later—around 2 years or so1. This means cartilage and bones are still growing, which requires the nutrients puppy food contains.

So, when can you switch a Great Dane from puppy to adult food? Great Danes should be switched at 18 months of age.

divider dog paws 3 oct 2024

How to Switch a Great Dane from Puppy to Adult Food

Now that you know when to switch your Great Dane puppy to adult food, it is time to learn how to switch foods without having it upset your pup’s stomach. You can’t just put down puppy food one day, and then adult food the next; this is a recipe for gastrointestinal issues. Instead, you’ll need to make the food switch slowly, so your Great Dane has an easier time with the transition.

Do not worry that a slow switch will take forever, though. You can easily switch your dog from puppy to adult food in just four days.

Here’s how:
  • Day 1: 75% puppy food, 25% adult food
  • Day 2: 50% puppy food, 50% adult food
  • Day 3: 75% adult food, 25% puppy food
  • Day 4: 100% adult food
That’s it! It takes less than a week to switch your dog’s food out slowly enough. When it comes to the type of adult food you choose, you probably want to continue with the same brand as the puppy food (and even the same flavor if possible). This will also make the transition easier for your pup.

Great Dane Puppy Eating
Image Credit: Rick’s Photography, Shutterstock

The Dangers of Overfeeding

It can be easy to overfeed a Great Dane, whether they’re a puppy or an adult. However, you need to be very aware of how much you’re feeding your pet, as overfeeding a giant breed dog may not just result in obesity. Too much food for your dog can actually lead to joint diseases, such as osteochondritis or hip and elbow dysplasia as excess food encourages rapid growth, which can negatively impact giant breeds.

To figure out the best amount to feed your Great Dane, check out the bag of dog food for feeding guidelines or speak to a vet about what’s appropriate. Overall, though, Great Danes may generally require 6–10 cups of food a day depending on their current size.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the personalized advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

The Dangers of Eating Too Quickly

Many dog breeds tend to gobble down their food, and this habit of eating too quickly isn’t as innocuous as one might think. Eating too fast is just one-way bloat (or gastric dilation volvulus) can occur in dogs, and unfortunately, this is one of the biggest killers of Great Danes. There are ways you can reduce the chances of this occurring, though.

First and foremost, use a slow feeder to prevent your pet from eating its food in one gulp. Slow feeders make it harder for your dog to get food out of the bowl, which means it can’t eat nearly as fast as it typically does. These come in a variety of shapes, sizes, and colors, so you shouldn’t have difficulty finding one that works for your Great Dane. Other than eating too quickly, other possible causes of bloat in dogs include:

  • Exercising right after eating
  • Having a single meal a day
  • Stress

So, don’t feed your Great Dane just once a day. Instead, break it down into two or more meals throughout the day, and ensure your pet isn’t going for long runs or engaging in rambunctious play in the backyard for at least an hour after eating. You may also consider a prophylactic procedure (that is frequently done in breeds predisposed to bloat) called gastropexy for your Dane, which involves tacking the stomach to the abdominal wall.

Male veterinarian examining Great Dane on cancer in vet clinic
Image Credit: Lucky Business Shutterstock

divider dog paws 3 oct 2024

Conclusion

Great Danes grow quickly but don’t fully mature until later, so they shouldn’t be switched from puppy to adult food until they’ve reached 18 months of age. When switching your dog’s food, you should do a slow transition to avoid any stomach upset (which will still only take 4 days or so). You should also take care to avoid overfeeding your Great Dane to reduce the risk of degenerative joint diseases that can occur from eating too much and growing too quickly.

Finally, ensure your dog isn’t eating too fast, no matter what age it is. Eating quickly can cause bloat, which is one of the biggest killers of the Great Dane. You can give your dog its food in a slow feeder to help it eat at a more normal pace and also help prevent bloat by discouraging exercise after a meal and feeding your Great Dane two or more meals a day.


Featured Image Credit: Martin Tajmr, Pixabay

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Dogs With Coprophagia: Why Does Your Dog Eat Poop?

Coprophagia is the term used to describe the behavior of eating feces, which is common in dogs. Sometimes, the dog’s own feces are...

Wag vs Taste of the Wild Dog Food: 2025 Pros, Cons & What to Choose

So, your vet has just advised you that your dog should go on a grain-free or limited grain diet as it is either...

How to Calm a Male Dog When a Female Is in Heat: 4 Vet-Verified Methods

If your female dog is not fixed, they will eventually go into heat, and this will happen approximately twice a year. When this...

Bichon Frise Colors & Patterns (With Info & Pictures)

Bichon Frises are known for their unique genetics and we’re going to uncover the secrets behind their mesmerizing coat patterns. From the classic...

More related

Utonagan Dog Breed: Info, Pictures, Care Guide & More

Today, we’re exploring the captivating Utonagan, a dog breed that seems to have borrowed its looks from a wolf while sneaking in the...

Menadione in Dog Food: Vet-Reviewed Safety Facts

We all want to feed our dogs the best type of food we can. With such a plethora of choices on the market...

Jack Russell Terrier German Shepherd Mix: Info, Pictures, Care Guide & More

Both the German Shepherd and the Jack Russell Terrier make awesome pets. So, breeders set out to mix the two and create the...

How to Teach a Dog the Command “Place” in 4 Easy Steps (Vet Approved)

Properly training your dog is a way to set it and you up for a successful relationship and it will make your life...

Keep reading

Can Dogs Eat Eggs? Vet-Verified Nutrition Facts & FAQ

Eggs are popular items in most American refrigerators. People use them in a wide variety of recipes, so it is only natural to wonder if dogs can eat them too. The short answer is yes. Your dog can eat eggs...

Can Dogs Eat_eggs

Natural Balance Dog Food Review 2025: Recalls, Pros & Cons

Review Summary Natural Balance is a brand of dog food that was first created in Burbank in California back in 1989 by Dick Van Patten. This company aims to produce high-quality pet foods that meet your dogs’ nutritional requirements and...

Dogster_Natural Balance Dog Food Review

10 Best Foods for English Bulldog Puppies in 2025 – Reviews & Top Picks

Full of charm, humor, and personality, English Bulldogs are among the most popular and well-known dog breeds in the world. All puppies are hard to resist, but the wrinkly skin and smooshed noses of baby Bulldogs make them even more...

feeding english bulldog puppy

Can Dogs Eat Icing? Vet-Reviewed Facts

Whether you are planning to make a cake to celebrate a milestone in your dog’s life or you simply want to let your dog have a taste of icing, the sweet taste is guaranteed to catch their interest. Icing is...

Can Dogs Eat_icing

Pure Balance vs Blue Buffalo Dog Food: Our 2025 Comparison

The dog food aisle can be a bit overwhelming when you’re faced with brand after brand claiming to offer the best nutrition. You want the best for your pet, so where do you start when choosing the right dog food?...

Dogster_Dog Food Pure Balance VS Blue Buffalo

Can Dogs Eat Miso Soup? Vet-Verified Nutrition Facts & Risks

Dogs are more than just pets. Roughly 95% of owners consider their canine companions as members of their families, so it only makes sense that you’d want to share some of your food with your pup. Of course, some foods...

Can Dogs Eat Miso Soup

Can Dogs Drink Tea? Vet-Approved Nutrition Facts & FAQ

Sometimes, it’s nice giving your canine companion a treat you know they’ll love, and occasionally, those treats are something you would eat or drink too. Take tea, for example. Plenty of people enjoy tea because of its various flavors and...

Dogster-Can-Dogs-Drink-Tea

Can Dogs Have Grape Jelly? Vet-Verified Facts & FAQ

Dogs love to sample from the garbage can if it’s within reach. One food they might accidentally get into is grape jelly. But what’s wrong with that, you ask? Can’t dogs eat grape jelly? Grape jelly can be dangerous for...

Can Dogs Have Grape Jelly