Awhile back I wrote a post that stated you should feed your horse a minimum of 1.5% of it’s body weight in forage. It’s also useful to know how much your horse weighs when calculating grain rations and dosages of de-wormers and medications. Under estimating the weight of your horse can cause problems with medications because the doses need to be carefully calibrated. According to my nutritionist it’s common for owners — and even veterinarians — to underestimate a horse’s weight by 10%, which would be at least 100 pounds for some horses. So, how do you weigh your horse?