So my teenage friend is somewhat of a know it all. She got a freshly weaned filly about 4 years ago that was bred up the wazoo. Her papers are fantastic and she’s a beautiful horse. Growing up, this filly was exposed to all sorts of things and environments and the girl was constantly messing with her in general. She started her very young and began riding her before she was barely 2 because she was impatient. She ended up moving and taking the filly with her to work on a dude ranch. For a while, the horse was amazing and the girl loved showing her off. Well now the horse is almost 5 and for the past year the girl is having all sorts of issues with her. Needing hock injections, explosive behaviors, bucking and just going mentally insane. I’m well aware that starting a horse too early is a big no-no but I’d like to hear some stories or thoughts on this topic. Has anyone heard of a similar experience?