Ideal Weight of 3.5 month old lab puppy

Question
Hi i have a very sweet and naughty labrador puppy Tyson. He is 3.5 months old and weighs just 5.5kgs, i just wanted to know what is the ideal weight of the puppy of this age. And also suggest me is this right time to hire a proffesional trainer for my puppy??

Answer
That sounds a little small.  The solution is not to fatten it up, but to adjust the food to keep it at ideal body condition.  You should be feeding a puppy chow now. Switching to an adult chow for the larger breeds at 4 months, slows growth and helps develop sturdier joints.

Your dog definitely should be narrower at the waist than the hips and chest. You should be able to easily feel the ribs, but not see them. Each dog is different. Standard recommendations are a good place to start, but each dog must have its food and exercise adjusted to its individual needs. Here is a link to a good illustrated guide, http://www.longliveyourdog.com/twoplus/RateYourDog.aspx

Puppies will learn quickly at that age, but have very short attention spans.  You may want to wait until iti is 6 months old for a professional.  Until then, work on teaching obedience yourself.  Keep sessions short, only a few minutes at a time.