weird poop *pic*

[Deleted]

So I noticed my ferret has weird looking poop today. He has been eating a mixture of kibble.. Orijen (5lbs. bag), Wellness CORE (2lbs. bag), and EVO (2lbs. bag). He has been having normal looking poop since starting his new food about a week and a half ago but out of nowhere today, he has diarrhea that looks like this

What could be wrong with him? Nothing has changed, he didnt get into anything, no food changes, no treats, nothing at all has changed. Does anyone know what the reason behind this weird looking poop could be? Should I be worried?
Please note, he is acting normal, eating normal, and drinking normal. He is his normal, crazy self. Im really confused and upset.

[unclejoe]

I wouldn't say that's diarrhea. It does look like the poops we got when feeding only Evo a couple years back. Why it took 10 days, is a mystery. Theirs turned to that after a couple meals and stayed that way till we started mixing.

[Sherry]

That looks to be undigested fats. Whichever new food is added in, start going a bit slower with the transition.