Nothing has changed at all. Other than he hit 44 weeks on August 14th.
The dogs have always been fed in the same room, several feet away from each other. I always put the puppy's bowl down, make him sit and wait, put the older dog's bowl down, make her sit and wait, and then release them at the same time. He's never made a dash to get to hers first rather than his own, and if he finishes first (if??!!) and he makes an attempt to go for hers, I can stop him with a simple correction.
Jack is going to be 13, and he's already 5'1, so significant height difference there. And he's always fed the puppy at least one meal each day, and lunch and dinner daily since he's been on summer break. That includes the days when I put in the special extras, so it would make more sense for Jet to see Jack as the bringer of really yummy things.
Jack can give him treats (dried chicken strips, etc.) with no problem, and Jet will obey his commands when Jack asks him to sit, or beg, or high five. Doesn't make any sense.
I used to have a Multiple Personality Disorder, but the doctor says we are fine now.
Harley - 8 year old Beagle x Dobie
Jet - 10 month old Labrador Retriever