Rabies is a deadly viral disease that attacks the brain and nervous system of mammals, including humans. The virus spreads through the saliva of infected animals, usually when they bite another animal or person. Once symptoms appear, rabies is almost always fatal, which makes it one of the most dangerous diseases on Earth.

Animals with rabies often behave strangely: they might foam at the mouth, act aggressive for no reason, or stumble around as if confused. A normally shy raccoon might wander into a yard in broad daylight, or a friendly dog might suddenly become vicious. The disease makes animals lose control of their behavior because it damages their brains.

The good news is that rabies is preventable. People who work with animals or who get bitten by a wild animal can receive shots that stop the virus before it causes harm. This is why doctors take animal bites seriously, even small ones. Pets like dogs and cats receive rabies vaccines to protect both them and their owners.

While rabies remains a serious threat in many parts of the world, vaccination programs have made it rare in countries like the United States. Still, avoiding wild animals, especially those acting strangely, remains important.