Butter was shooting diarrhoea again this morning...sigh. Peanut too was passing out loose stools. So, I thought it best to get them checked again in case it is another major worm infestation.
It turned out that the culprit is a parasite called Isospora Felis (also known as "Coccidia" in chickens). Peanut's stools had just some low-grade presence of the parasite while Butter had much more. This made sense as Butter's diarrhoea is more severe.
Both are on medication now, and I pray this will solve the problem once and for all. Their diarrhoea is really wearing me out.
How on earth did they get this parasite, I'll never know. They are confined in the room, and their food is kept in the fridge.
There has been no diarrhoea for the past three hours, so that's good.