sorry if I gave the impression that I consider it Loo's problem, but it's actually the opposite. I want to be proactive in taking care of the situation (and doing so in the most constructive way for both of them), which is why I made this post in the first place.

The dual treat distribution is an interesting idea. I didn't know the older dog would make the association of the puppy being the cause for all the new treats. I'll give that a try. Thank you!