Thank you all for your suggestions.
Well, it seems that as usual, they are both normal today. I have been feeding them a small amount of boiled chicken in broth with rice since Teagan got sick. Pippen is his usual bouncy self today. Thank goodness. As I said, this happens often, and it's weird. Not the bloody part though. It was a very small amount of dark blood, so I don't know. They aren't fed table food, and only get very small treats after a bathroom run, I've learned that lesson...
We have a Bradford Pear tree in our yard that drops little slimy pears in the winter and that has been a huge issue with their GI problems over the years. I haven't noticed as many this year. They are very small and impossible to pick up, so our only hope is hungry birds...
I need to figure out how to post pictures, and view others.
Love these little guys