Do dogs have a discharge while they are in heat and should you be concerned?

Yes, female dogs in heat (estrus) typically experience a discharge, which can vary in color and consistency, often appearing bloody at first and then becoming lighter. This discharge is normal and part of the reproductive cycle. However, if the discharge has an unusual odor, is excessive, or is accompanied by other symptoms like lethargy or vomiting, it may indicate an infection or other health issue, and you should consult a veterinarian.