Diarrhea. It's bad enough when a pet has stinky loose stools, but when they're mixed with bright red blood — or a pet strains to defecate and produces blood only — even the most sanguine pet owner ...

Diarrhea usually resolves in a couple of days, but it can sometimes continue for weeks. Persistent diarrhea can be a sign of an allergy or a chronic condition, such as inflammatory bowel disease (IBD) ...

Once a virus infects your body, it can destroy healthy cells and make multiple copies of itself. The virus causing COVID mainly attacks the cells lining your airways. This makes it hard for you to ...