> Is this true ? Lines can determine whether a dog gains weight or is there something that he might be lacking in his diet ?Thanks
Most definitely, and the is the right age for going through this lean period. Your consolation is once he does fill out he will be a Laster and look really well into old age.
If he is eating as much as he wants of god food he will fill out in his own good time.
My 12 year old Kizi was just like that in her youth, won lots of second prizes at championship shows with the judge saying more body and coat.
She went on to start winning Limit classes at 5, but sadly her own daughter was winning really well by then so she never got further than a RCC.
Her half brother was the same, and eh is still getting complimentary critiques on how fit he is at almost 11 and holding his own in Open, he has 2CC's and a RCC so just missed out on his title, again didn't start winning until he was fully mature.
In your breed this is especially true with some of the top winning sibes doing really well as Veterans in the showring and working until advanced ages.
As for food I put Kizi on Arden Grange Prestige (30^ protein) as she could just about eat enough of that to hold some weight. So if he isn't a great eater you want him on concentrated nutrition. The veg is fine as an additive for it's vitamins but is normally used to bulk out a diet for dogs that are the opposite of yours, like mine once they get older and have to have their food cut down

. Tripe is enjoyed by most dogs and has fat in it so may help put on weight, but lean is good, though I can understand he has taken that to super model levels.
Barbara and the Grey Curly Tails.