Hello! I have a 15 year old mare that has had a belly that I'm not sure what to call it... She had a foal about 5 or 6 years ago. Her belly keeps getting bigger and bigger... I'm starting to think it's not a grass belly... We only have 1 male horse in the pasture. We got him in May, and a few months after that is when her belly started to appear. He is a gelding, so I'm just wondering... Any reply is very appreciative.
Sorry for bad pics!