It’s great that you keeping an eye on their poo! We all have become poopologists – it is the best way to figure out what is going on with them healthwise.
Cecals can be in a grape like cluster, however, I have seen Rucy consuming hers and they are formed individual soft poos that she normally just gets straight from her pooper. But on rare occasions, when she leaves her spot, she may leave one or two behind…and they looked like normal poops, but just squishy. Your descripton sounds like a bit of cecal that was left behind.
And Beka is right that leaving them behind could have been a result of having a diet that’s too rich and they just didn’t comsume all of their cecals. The fact that they had just broken into the treats may explain it. Just keep an eye on them to make sure that after this everything goes back to normal.
I know they broke into the treats – mine have done that before too when I left the treat bag out on a side table, and I just keep a close eye on them for next 24 hours to make sure it hasn’t upset their digestive system in a serious way. (I do recommend staying away from yogurt drops all together though )
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