Slater at 1 year 11 months is 65 lbs.
Katie at 1 year 9 months is 55 lbs.
Not sure about Simon or Charlie,they are still growing so fast.
An artical in a "Dog Fancy" magazine,the magazine title is "Boxers",the article title is "Obesity is a Growing Problem",states that a male Boxer should be between 60 and 75 lbs,and considered obese at 81 lbs.A female should be between 60 and 65 lbs,and be considered obese at75 lbs.I don't know how correct this is.The author is Fran Hodgkins.