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How much weight gain after 18 months?

TylerDurden

Well-Known Member
All,
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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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.
 

TylerDurden

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.

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.
 

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.
 

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
 

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 ……...
 

TylerDurden

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 ……...

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

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
 

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.
 

TylerDurden

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.

Don‘t scare me @DennasMom . No, seriously...I appreciate the input. Let‘s just see. I will keep you guys up to date :)
 

Kenneth Smith Jr

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.
Is this for both sexes? Is this before spayed or neutered? What happens after spayed or neutered?