How much weight gain after 18 months?

Discussion in 'General Mastiff Discussion' started by TylerDurden, Feb 16, 2019.

  1. TylerDurden

    TylerDurden Well-Known Member

    Generally (on average) and based on your experience, how much weight do Mastiffs gain between the age of 18 months and say 4 years? Bane is turning 18 months next week. He‘s close to 34in tall, and weighs about 215lbs. However, he still very much looks like a puppy. His face, he is pretty lean, and hasn‘t really filled out too much. A general idea would help. I understand that there are way too many factors to consider for an accurate prognosis. He was the biggest of his litter. Unfortunately, I don‘t know anything about his brothers and sisters. Some recent pictures below. Most people guess that he weighs between 150-170.



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  2. Boxergirl

    Boxergirl Well-Known Member

    In general, and across several large/giant breeds, this is what I've found.

    Year one = primarily height. Weight too, but pretty balanced with height.
    Year two = weight, maybe a smallish gain in height.
    Year three = mass/bulk. Head broadens, etc.

    That's just been my observation and many of those dogs have been altered by age two, so that may make a difference. I'll be curious to see what other people say.
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  3. TylerDurden

    TylerDurden Well-Known Member

    As always, thanks for your input @Boxergirl ! At a high level, this is definitely in alignment with everything I have ever read and heard. I‘m pretty sure he‘s done in terms of height. Maybe 1/2-1 inch more, but that should be it for sure. We are glad he‘s still lean and athletic.
  4. glen

    glen Super Moderator Staff Member

    2 of mine did the norm as boxergirl said.
    Gandalf however grew until he was 4, hes tall for a cc at just over 30 inches and weighs 138 llbs. Which surprised me as hes very athletic looking, but muscular.
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  5. Pastor Dave

    Pastor Dave Well-Known Member

    Mr. Chev weighs 175 with one leg hanging off the scale on the floor---he is 4 years old. We go out for a "out-of-leash" run most days, and he is fairly athletic. I didn't keep records of earlier years, but he seems at about his max. His daddy, however, was huge....sorry I can't add more. Chev in weeds 4.jpg
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  6. marke

    marke Well-Known Member

    i'd agree with boxergirl and glen's experiences …. when I paid attention to how my dogs grew I wasn't keeping males , but I believe they would mature 10-15% over what they would weigh at a year …… smaller type dog than an English mastiff , but the males would mature through 3-4yrs and the females 2-3yrs ……...
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  7. TylerDurden

    TylerDurden Well-Known Member

    Great insight. Assuming year one + 15% would get him close to 230. His parents are 225 and 185.
  8. Smokeycat

    Smokeycat Well-Known Member

    Kryten put on about 20 lbs after 18 months. That said he is about 15 lbs under an ideal weight for his body. He did fill out a ridiculous amount however. Kryten was a slow grower, he didn't finish filling out until just before he turned 5. He also had a major interruption to this growth at 16 months when he had his first surgery. He lost 20+ lbs in the week following it and it took a couple of months for him to get it back
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  9. TylerDurden

    TylerDurden Well-Known Member

    As always guys, great input! It‘s fascinating how Mastiff pictures can be deceiving. On some, Bane looks like an underweight puppies, and on others like a full grown dog.

    That‘s me and Bane in Antarctica (well...our backyard).


    A few days ago. He really looks like his mom.
  10. DennasMom

    DennasMom Well-Known Member

    Someone posted a chart here on the forum long, long ago...

    The version of it I kept shows 18 months to be 77-79% of final adult weight... so, 215lbs at 18 months could get to 270lbs when "done" filling out, which might not be until he's 4 yrs old.

    But, each dog is different... these are just arm-waving guidelines...
    Denna hit her final weight at about 3.5 years. She was just over 80% of the way there at 18 months.
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  11. TylerDurden

    TylerDurden Well-Known Member

    Don‘t scare me @DennasMom . No, seriously...I appreciate the input. Let‘s just see. I will keep you guys up to date :)
  12. Is this for both sexes? Is this before spayed or neutered? What happens after spayed or neutered?
  13. Steven C

    Steven C Active Member

    Crazy how big. Wow!!
  14. Sheila Braund

    Sheila Braund Well-Known Member

    He's gorgeous, he's really grown! Such a handsome boy....thank for posting the pictures

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