need help finding a shinchan episode

I don’t know if I should be posting it here but the shinchan subreddit is inactive so…
I saw a episode just a while ago and it was set in the pre Mexico movie timeline.The episode was about shiro and him helping another dog named shiro.The owner of the other shiro was a old man. I can’t find the episode after searching about it. Please help me find it. Thanks in advance.

https://www.reddit.com/r/japan/comments/156q6gm/need_help_finding_a_shinchan_episode/