Age of Puppy

Question
Hi I got my Lab Puppy about 2.5 months ago. I didn't know what age he was then. He has just lost 2 upper centermost teeth.

Just want to know at what age that happens. I would like to know aprox how old my lab is.

Thanks

Answer
That usually happens about 4 months or a little sooner.  His head should be approaching it s adult size.  

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