Peanut did not eat his 11pm meal last night, so I thought perhaps he wanted to fast himself to heal.
This morning, he was still active. I fed him pumpkin + AD and he ate it all up. He even asked for more, but I had to refrain from giving him extra. After that, he passed out pasty stools. The symptoms are exactly the same as Butter's.
Otherwise, he is active and still playing happily with Butter.
Here's a photo just taken:
Butter seems to have recovered as his stools are firm and nice.
I hope Peanut, being the bigger and stronger one, will recover quickly. Then, I hope the bug will leave my household for good.