Well, I don't normally watch my cats go to the bathroom but Cookie (5 month old orange tabby boy) went poo right after I was done cleaning a litter box. Anyway, it was mostly solid, but the end was sorta mushy and I saw a couple streaks of reddish color. I didn't get a great look b/c he covered it up right away. Now, they mostly get a brown diet, BUT he has had some food lately that I know has red dye. Last night he had a few meow mix treats- not something I normally buy but were given to me by co-worker when she gave me the kittens, also the big boy cats have just a little bit of friskies that have red bits mixed in their food. Could these have caused what I saw? He is eating, playing and acting normal.