If you can't take the puppy in right away - watch for unusual bleeding / blood in urine, blood in stool, bruising of gums, etc.. (1800petmeds.com)
Part of the time uneventful surgery fits that criterion, and unusual bleeding does not occur. (vetgen.com)
In the acute stages of the disease they can experience any of the following: high fever, depression or lethargy (which may be hard to spot in a greyhound since they sleep 90 % of the time,) anorexia, anemia diarrhea or constipation, loss of appetite or loss of body weight, vomiting nose bleeds, skin hemorrhage or other unusual bleeding, swollen legs or lymph nodes, nervous system disorders, such as stiff gait, head tilt, seizures or twitching, pale gums and / or inner eye membranes. (kcregap.org)