Etta Agan Bradecamp, DVM, Dipl. ACT, ABVP

When a mare exhibits unexpected or undesirable behavior that cannot be explained by illness or injury, the owner might suspect it is related to the mare’s estrous cycle. He or she might notice the mare is more difficult to train or ride periodically, she might act aggressively toward other horses, wring her tail, urinate frequently, or exhibit pain or sensitivity in her flanks. Owners often ask