Hello, thanks for your question today! I am Dr. Drew, and I am a licensed veterinarian. I'll be happy to help you in any way I can.
shaking and running around are not typical signs seen in a dog with diarrhea.
shaking can be a sign of pain,
and some dogs in pain will be hyper-excitable and may try to "run away from the pain",
but it really depends on the underlying cause of the diarrhea, as to whether or not it is very painful.
some types of diarrhea may be more painful than others,
especially those caused by a blockage from foreign materials in the intestinal tract.
if there's also vomiting going on, then that increases the likelihood that this is a very serious problem requiring veterinary care right away.
if there's no vomiting, then supportive care such as a bland diet, with added fiber, such as brown rice, mashed green peas, or canned pumpkin, may be of some value.
there has been no vomiting but at 2am and 5.30am he had these episodes - he is normally fed on raw meat and biscuits - should i avoid the meat ?
raw meat is known to be a risk factor for causing digestive problems in dogs,
so I would certainly avoid it in this situation.
if you can get pepto-bismol in the UK, you can use 1mL per 5kg body weight, to help reduce intestinal inflammation and discomfort
(bismuth subsalicylate is the active ingredient)
if these symptoms persist for more than 48 hours, or if there's vomiting or a poor appetite, then veterinary care should be obtained.