Hi I have just got a 12 week old cavapoo pup I have him 5 days and he is really struggling to poo. He will strain to push out 1 tiny piece and this will dangle by a thin piece of hair/muscus(I don't know what it's dangling by but looks stringie) then the rest seems to be getting caught and is just pushed out enough that you can see it and if he sits down on anything will leave a poo mark.
What can I do to help him? I'm in the vet on Tuesday for vaccine and will ask them to clear his anal glands. (I haven't got the stomach to do it myself or knowhow).