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If you are looking for a massive dog breed, the Tibetan Mastiff is certainly one of the biggest dog breeds out there. But just how big is your Tibetan Mastiff going to get, and how long will it take them to get there? On average, a Tibetan Mastiff can weigh up to 160 pounds and a length of 30 inches! But it will all depend on different factors.
In this guide, we’ll break down everything you need to know about how quickly you can expect this lovable giant to grow. That way, you have some idea of just how big your dog will get!
Tibetan Mastiff Breed Overview
While there’s no denying that the Tibetan Mastiff is a massive dog breed, they are certainly lovable giants. They get along great with other kids and dogs, and for such a large breed, they actually have a pretty long average lifespan of between 10 and 12 years.
They are great dogs but get ready for tons of hair, and it’s really best if you can find ways to keep them engaged with some kind of mentally stimulating activity or task. They’re great pups, but they’re not always the best choice for first-time dog owners simply because of their massive size.
Tibetan Mastiff Size and Growth Chart
As your Tibetan Mastiff grows up, they don’t stay small for long. Their exact weight and height will vary a ton depending on their exact age and a few other factors, but if you follow the chart below, you should have a good idea of how large you can expect them to get each step of the way!
The guide will also help you figure out if your Tibetan Mastiff is going to get to the larger side of things or if they’re going to stay on the smaller side of things. If they’re on the smaller or larger side of the scale at any point, it’s more likely that they’ll stay that way throughout their entire life.
| Age | Weight Range | Length Range |
| 2 months | 10 to 25 pounds | 11 to 14 inches |
| 3 months | 25 to 45 pounds | 14 to 19 inches |
| 4 months | 30 to 65 pounds | 15 to 19 inches |
| 5 months | 35 to 75 pounds | 19 to 23 inches |
| 6 months | 40 to 85 pounds | 20 to 24 inches |
| 7 months | 45 to 90 pounds | 23 to 26 inches |
| 8 months | 50 to 95 pounds | 24 to 26 inches |
| 9 months | 55 to 105 pounds | 24 to 27 inches |
| 10 months | 55 to 115 pounds | 24 to 28 inches |
| 11 months | 60 to 125 pounds | 25 to 29 inches |
| 12 months | 60 to 135 pounds | 26 to 29 inches |
| 18 months | 65 to 150 pounds | 26 to 30 inches |
| 24 months | 70 to 160 pounds | 26 to 30 inches |
When Does a Tibetan Mastiff Stop Growing?
As a larger dog, a Tibetan Mastiff will typically keep growing longer than many other breeds. However, while a Tibetan Mastiff might continue to fill out a little after the 18-month mark, they’re usually all but full-grown at this point.
However, it is possible for them to put on a few more pounds and another inch between the 18-month mark and the 24-month mark.
Factors Affecting the Size of Tibetan Mastiffs
There are a few different sizes that will go into determining how large your Tibetan Mastiff can get. By far, the most significant factor is their sex. Males tend to be much larger than females, but genetics will also play a huge factor.
Larger parents tend to produce larger offspring, and this is certainly true for a Tibetan Mastiff. You never know for sure, but on average, larger parents will lead to a larger puppy.
Ideal Diet for Maintaining a Healthy Weight
To keep your Tibetan Mastiff at a healthy weight, you need to stick with the right quantity of food. The exact amount your Tibetan Mastiff needs to eat will depend on their weight, but you can play it safe by sticking with the feeding recommendations for the specific food you go with.
The most important thing is that you don’t go overboard with treats, and you don’t feed your Tibetan Mastiff table scraps. If you do this while sticking with high-quality dog food, you shouldn’t have any issues keeping your Tibetan Mastiff at a healthy weight.
How to Measure Your Tibetan Mastiff
If you need to get an accurate weight of your Tibetan Mastiff, it’s best to put them on the scale by themselves. While you can pick them up and subtract your weight, this becomes much harder as your Tibetan Mastiff reaches their full size.
To measure their height, you want to measure their haunches, which is the area just before their neck starts. Finally, ensure you are not measuring their thick fur coat when taking this measurement, as it doesn’t count toward their height.
Summing Up
Now that you know a little more about how big your Tibetan Mastiff is going to get, all that’s left is for you to sit back and enjoy the growth spurts. They’re adorable as puppies and as full-grown dogs, but once they reach their full size, there is no going back to the small puppy that could curl up in your lap!
Featured Image Credit: Tatyana Kuznetsova, Shutterstock
