Join Date: Feb 2012
Location: Alberta, Canada
if you'd had her ultrasounded early on, they would have been able to tell you how far along she is and if she was carrying twins, which would have been useful info. But since you don't have that, unfortunately there is nothing really you can tell from a photo, other than the fact that she looks to be in foal, likely further along than 4 months.
Some mares don't look pregnant at all until the last couple months, others you can tell immediately. Some get absolutely massive, others barely look pregnant. I knew a thoroughbred mare you would have sworn was months off give birth to a MASSIVE colt that night. My BO has two right now, both in foal for late may-early june, one is about the size of your mare, the other you cant even tell is pregnant.