Things that you need :
- Boots + Safari/Cowboy Hats
- Clean water
- Mosquito repellent
- Mosquito net
- Long Stick
Things to consider :
Vaccination
Get a complete set of vaccinations before you travel to the Amazon rainforest. This can defend yourself from common diseases including malaria, yellow fever, meningitis, hepatitis, rabies and dengue. These illnesses can cause serious problems, especially when you are in remote sections of the jungle with primitive medical facilities and limited transportation infrastructure.
Water & Food
Consume only bottled water and clean food. Avoid drinking tap water or using ice made from tap water. Be cautious if you need to eat food from street vendors in the Amazon. Upset stomach and fever often result from exposure to the Amazon's unique strains of microbes and bacteria. Pack plenty of stomach medicine and visit a local pharmacy if you need additional medication or treatment for loose bowels or fever. Do not try to consume any animal you found unless you are really really SURE that the animal is not poisonous.
Apparel
Wear pants and a long sleeve shirt in the jungle to protect your skin from insects bites and rashes that may appear after contact with certain plants. Wear a sturdy pair of water-proof boots when hiking in the Amazon. Also check your boots before putting them on to make sure no venomous creatures are hiding inside. Tuck the cuffs of your pants into your boots and sock to form a tight seal. This keeps out leeches and other pests.
Wear a hat. This can protect you from snakes if they attack you from above. The long stick can also be used to defend yourselves from snakes/alligators/crocodiles.
Guide
Travel with a professional guide. Avoid going to remote regions on your own, and never approach any wildlife. The predatory animals of the jungle tend to stay away from humans, but they will attack if they perceive you to be a threat. The best way to see wildlife from a safe distance is to take a guided tour of a national park or nature reserve.
Repellant
Although snakes or crocodiles look dangerous, most deaths are actually caused by mosquitoes.
Use a strong insect repellent and sleep with a mosquito net to avoid bites and stings. Mosquitoes can carry malaria and dengue, so it's imperative that you limit the number of bites you are exposed to while traveling in the Amazon.
Fauna + Flora
Don't swim in rivers or lakes without first consulting a guide or local authority to verify the safety of the water.
When it comes to exotic flora and fauna, it's best to look, not touch. The Amazon is home to countless plants and animals that can be dangerous to humans if not handled with care.
If a leech bites you, rinse the leech using water mixed with tobacco (you can get the tobacco from cigarettes). The leech will slowly peels off (they do not like tobacco).
To defend against snakes, pour salts around your tent.