[Heartx]

I have just noticed on this forum from the pics people send in that some pups look so much more mature than others the same age. My pup is WGSL and just little over 5 months. Yet I see others pup that look so much younger yet same age. Then I have seen some at this age and I think there is no way that dog is 5 months. Do the other lines like working or show develope slower or faster? The muscle development seems to vary. Any thoughts from the expects?
This is Boss having time out once again for not leaving alone the two yorkies in our house.

 

[Femfa]

It's just genetics and environment. Not every dog develops the same, some are neutered/spayed early, some come from a larger or smaller litter, some dealt with parasites or poor nutrition.