my dog is very weak

Question
Hi,
My name is Sunil,i am from India.I have a lab around 1 year old and i see no progress in his health,he is very thin and weak but very active.
i have seen labs which are huge in size....may be i dont feed him properly.
Can you suggest some tips to keep my dog healthy?  

Answer
Not all Labs are huge or have the heavy body build.  Go to http://www.puppychow.com/products/popup_body_condition.aspx and compare him to the pictures there.  If he is too thin, try feeding him more.

Here in America, we have a large selection dog chows all carefully formulated to give a dog the complete and balanced diet it needs.  If any of the major brands such as Purina, Iams, Science, etc. are available, he should do fine on any of them.  It is very difficult for the average dog owner to formulate a diet that is complete and balanced.  

Dogs do fill out more after a year old, not gaining weight weight, more changing shape.  If this doesn't answer your questions, use the follow up question option.