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great dane & english mastiff puppy growth

Many times great danes and mastiffs are lumped into the category of "large breed puppies," which grow to 50 lbs. or more. Giant breeds like mastiffs and danes can grow from 1-2 lbs. at birth to over 250 lbs. within just two years! Big difference. In human terms - if a baby was born weighing 7 lbs. and grew at the same rate as a giant breed dog, that little bundle would weigh in at around 1000 lbs. by age 2!

Because of their rapid growth, nutrition and feeding are crucial to proper development. It's extremely important that you don't overfeed a giant breed puppy as overfeeding can lead to painful bone/joint diseases. Check out our great dane and english mastiff nutrition and feeding page for more information >

puppy care
nutrition and feeding
giant breed growth
great dane/mastiff health
training large breed dogs
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prevent injuries

Injuries to puppies' bones and joints can cause serious long term problems. Some studies have shown that allowing puppies to play on slippery surfaces can be an environmental cause of hip dysplasia. If you have children, don't allow them to "tackle" your puppy or lean on them as this can cause stress on their bones and joints. If you have hardwood or tile floors, you may want to invest in some throw rugs and only allow your puppy to play on carpeted surfaces while their joints are developing.

Don't allow your puppy to run for long periods of time or jump from heights (like the bed) until they are at least 18 months old. ie: Don't take your 3 month old great dane jogging! Hairline bone fractures can develop leading to issues down the road.

vitamin c

Some studies have shown that providing moderate amounts of Vitamin C supplements to puppies that are genetically predisposed to hip dysplasia may reduce their chances of developing it. Others claim Vitamin C may help reduce growing pains common in giant breeds.

growth charts

Is there a pattern of growth that can be used to predict the size a puppy will grow to? Do all giant breeds grow at the same rate? These are questions we'd like answers to as well. We don't currently have enough data to answer these questions, so if you have a giant breed dog, please help us learn more about this topic by submitting your information to the growth  chart.

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submit your data

We are in the process of collecting great dane and mastiff puppy growth data from puppy owners and breeders. If you would like to participate, please submit your information in the i-tails.com community forum growth chart thread. Be sure to include the following in your post:

Your puppy's name
Puppy's Age
Puppy's Weight
What Brand and Type of Food You Are Feeding
How Much You Are Feeding
Puppy's Parents' Weights if You Know Them

Please remember to update your thread/chart as your puppy grows! We would love to see weekly weights on puppies up to 6 months and monthly weights at 6 months and up.

Thanks for participating!

Go to the Growth Charts >

If you had already been sending in your dog's info on the submission form, you'll notice it's gone! We had to remove it due to the large amount of spam that was coming in. We are in the process of adding all previously submitted information to the forums so you can update it there. If your dog's info isn't up yet, feel free to start a new thread with your most recent weight and we'll add your previous submissions to it.


skeletal diseases of the growing dog nutritional influences and the role of diet.
hip dysplasia more in-depth information on hip dysplasia

ask a question

Questions and answers can now be posted and found in our community forums.

Ask a Question >

recent blogs & popular questions

nutrition what is the best food to feed my great dane or mastiff puppy?
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