Final answer:
Diarrhea in older horses can indicate various issues, including infections, dietary changes, medication side effects, and medical conditions. Consulting a veterinarian is important for diagnosis and treatment.
Step-by-step explanation:
Diarrhea in older horses can indicate a variety of potential issues, including gastrointestinal infections, dietary changes, medication side effects, and underlying medical conditions.
One example of an underlying condition that can cause diarrhea in older horses is colitis, which is an inflammation of the colon. This can be caused by bacterial or viral infections, as well as dietary factors. Another example is equine gastric ulcer syndrome, which can lead to gastrointestinal upset and diarrhea.
If a horse is experiencing diarrhea, it is important to monitor their hydration levels and consult with a veterinarian for an accurate diagnosis and appropriate treatment.