Sorry a bit descriptive here but my dog has had the runs for a couple of days. I took her to the vets yesterday and he checked her over thoroughly and could find nothing wrong. He was happy that she was well hydrated and that the poos were normal colour. He gave her some worm medicine and told me to keep feeding her the sensitive food she is on but nothing else, not treats, biscuits etc. This morning on her walk she did a normal poo and I was relieved that she seemed to be on the mend but she then followed up with two very dark, almost black, slimy poos. She has since had another slimy poo in the garden (I should point out that she normally only has 2 sometimes 3 poos a day) and now is sleeping which she never normally does at this time of day. I have phoned the vets and got another appointment for later on this afternoon but I am really worried about her. 