Buddy gets stressed VERY easily, and always makes for runny poo, and if he is stressed for a long time (4th of July... days of fireworks) then blood normaly shows up. Then it's rice and hamburger for a day or two, then back to normal.

But if it's the first time, I would make sure to call the vet!

My dogs have never had constipation, they always have the oppsite problem!!!