My male labrador is 10 months old and weighs about 58lbs when his brothers and friends that are his age weigh about 85lbs, but his height is about the same as theirs. He just is not that thick, does this mean my dog is not going to be that much bigger than he is know or do some dogs have later growth spurts? Also at what age are they about full grown?

My Labs all seem to largely stop growing by 7-8 months. Is yours noticeably larger than a month or 2 ago? Hard to say without an objective measurement. Have you seen the brothers? Is it possible you have done a good job managing his body condition and the others are over weight? It seems half the questions I answer I send people to http://www.puppychow.com/products/po...condition.aspx Still, overweight may be our dogs' biggest health problem.

You dog may have gotten a slightly different scoop out of the gene pool. When Peggy was 13 months old, slightly younger Lola had most of her growth. Both were about 70 pounds. Lola's head was level with Peggy's shoulder. Peggy could nose print the top of the windshield of my little truck setting on the floor. The only Lab I ever saw that looked anything like her was her daddy, built the same, but huge. He was a field Lab, bigger than the show Labs and much finer boned. Very high energy.