Complex sentence: According to Schneeberger, aurochs were not concerned when a man approached, but when teased or hunted, an aurochs could get very aggressive and dangerous, and throw the teasing person into the air, as he described in a 1602 letter to Gesner.
Split into simpler sentences: According to Schneeberger, aurochs were not concerned when a man approached. But, teased or hunted, an aurochs could get very aggressive and dangerous, and throw the teasing person into the air, as he described in a 1602 letter to Gesner.