Over the years, our Labs have ranged from 85-100# ...... a lot depends on their heritage.
My girls did the Hunt Test thing this weekend. My young dog got her Started title in 4 straight passes - my older dog and I got wisdom running in Seasoned for only the second time. Saturday was freezing rain, high wind, very cold, even some Labs funked the water blind (including mine - she is not very good on blinds). But Sunday she seemed to have figured it out and had a splendid run on a very difficult test, including a 60 yard water blind across a muddy-banked pond and 20 yards uphill into an overgrown field -- but I had to cast her twice to a land mark that wound up in a puddle and a hole, so she DQ'd. But that's just the luck of the game, given the difficulty of that test she should get her Seasoned title without any difficulty.
They never met a mallard they didn't love . . .
My older dog met a pheasant for the first time about 2 months ago and was enchanted by that lovely object . . . .