I'm kind of wondering if April is. She is currently fed 4lbs per day ADM Primeglo, with supplements: Magrestore, Acti-flex, and copper/zinc. winter: Round bale grass outside, 4 or so flakes at night when she comes in Granted she can be very quiet, but IMPO she can be overly sensitive (noises, and things in an arena that she has been ridden in hundreds of times), and a little "stupid" about things she shouldn't be sometimes. also quite crabby under saddle, especially at the canter. in the past 2 months, she has seen the chiro, had a magnawave session, has a BOT sheet and neck cover, and saw our lameness vet a week ago (Stifle injections) I see one of the symptoms can be "hypersensitivity".