One of the sausages has a few spots of blood with this morning's poos on their paper. Two-three spots, light, clear red. Both dogs are wormed, full of energy and eating well. The stool was a bit runny so it's confused my initial thought that it could be constipation???

Any clues? I might ring the vet tomorrow, but that's not going to help until I work out which dog it is

Also, as a general question, any advice on how to treat constipation if it ever arises?

Thanks so much.