A mare will usually quit having her estrus (heat cycle). There are some mares that will still show signs of estrus during pregnancy. Usually it isn't as strong in outward physical signs as she was...
Well first, if the mare has been with a stallion, and she has marks on her back like the hair is gone in a few spots or small cuts then there is a good chance she has been bred too. If she starts to...
Mares frequently show no outward signs of pregnancy, other than missing an expected heat cycle. Some mares can even be racing fit well into pregnancy, up to seven to nine months. Most of the...