The information that I have read on the subject,
older dog not wanting to be jumped on by puppy, is because
as the older dog they require respect from the younger ones.
Buddy is the same way.
When we go walking, there are many puppies where I live, Buddy
now being the older pup, he loves going up to them but will run away
when they jump on him and at times he has growled. That is what
made me do alittle research. That's all it is. As an older dog they
just don't want to be bothered with this puppy hyperness any longer.
They want respect. When your pup get's older I am sure they will
be best buds. Buddy has friend that's an English Bull dog.
He was the cutest pup ever. Today he's huge! Good thing Buddy
became his friend