Border Collie puppy began pooping blood and worms before losing her fight for life.Little Keiko was advertised for sale on Gumtree in Glasgow for £1300 and was picked up by her owners last Thursday.The father, who doesn’t wish to be named, immediately noticed that the pup seemed abnormally quiet but was comforted when she began playing with his two young sons.After taking the youngster out to the garden for a toilet session, the 35-year-old was horrified to discover a fully grown roundworm in