Shih Tzu signs of pregnancy

Question
We have a 1 year old Shih Tzu who we think was in heat.  are
visable teats a sign of pregnancy or just being in heat.  The
is a possibility she could be as we have a male dog  

Answer
that can be a sign of heat and pregnancy. other signs to look for in pregnancy is the hair thinning around her nipples and her belly starting to grow bigger. you can take her to the vet around day 26-30 to have the vet palpatate her to confirm pregnancy. or an ultrasound around day 40 or xray around day 48 to confirm pregnancy. i hope this helps and fell free to ask any other questions you may have.