Where is Tetanus likely to develop in horses?

Tetanus is a serious bacterial disease caused by the Clostridium tetani bacterium, which thrives in anaerobic (low-oxygen) environments. This bacterium can enter a horse's body through deep puncture wounds or injuries that create an oxygen-deprived environment. Once inside, the bacteria can grow and produce toxins that affect the nervous system, leading to the muscle stiffness and spasms characteristic of tetanus.

In contrast, environments with high oxygen levels do not support the growth of Clostridium tetani, as these bacteria are anaerobic. Areas with constant movement would also be less likely to develop tetanus because movement usually helps keep wounds clean and exposed to oxygen. Clean, dry areas generally promote healing and discourage bacteria, particularly anaerobic types, from thriving. Thus, the best understanding of where tetanus is likely to develop aligns with environments that have decreased oxygen, making that the correct choice.