So, I finally found my first wild wolf after all of this time and befriended it successfully.
The problem is, I had no space in my den. Therefore, that wild wolf went poof and I never even saw it.
The message prompt in campaign told me my wuff was allegedly there in my den. So there was an additional problem of misleading communication in the prompt, and no warning message for me to clear space before I accepted the wuff into my den. Not even a message that the WW creation failed because I had no den space.
My proposed solution to these blunders all around would be to have the WW sent to a PM similar to item or moonstone deliveries when they are purchased. That way, your WW is there to claim someday even if you don't currently have the space for it. It is certainly a better alternative to having the wolf deleted without having the game even notify you.
Another solution would be for the campaign to reward a WW token in the event that there is no housing space for a befriended wolf at the time and the process doesn't work. That should also come with a warning message for people to clear den space before going about the campaign.