I have a beautifull 9mth old bullmastiff, but i think he might be a little smaller than what he should be, can u please tell me what the average weight and hight is for a 9mth old puppy, thanks

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20 to 24 inches 30 to 45 kgs

Not sure. Mine is from a litter of 11, which i think makes a diffrence. I keep thinking my boy is on the small side at: 9mo. old 75.4lbs. 23" at sholder