Coming a close second after the Nile as the world’s longest river, the Amazon River sets the record in terms of the sheer volume of water that it carries – a mind-boggling average discharge of 219,000 m3/sec of water.

Physiography of the river course. The Amazon River’s main outlets are the two channels north of Marajó Island, a lowland somewhat larger in size than Denmark, through a cluster of half-submerged islets and shallow sandbanks. There the mouth of the river is 40 miles (64 km) wide.

Swimming in the big rivers (Amazon, Marañon, Ucayali) is generally not a good idea due to strong currents more so than parasites. Swimming in the smaller tributaries, especially black water tributaries and lakes is safe, but don’t swallow the water.

Piranhas range from northern Argentina to Colombia, but they are most diverse in the Amazon River, where 20 different species are found. The most infamous is the red-bellied piranha (Pygocentrus nattereri), with the strongest jaws and sharpest teeth of all.

6 Fish to Avoid

• Bluefin Tuna.
• Chilean Sea Bass (aka Patagonian Toothfish)
• Grouper.
• Monkfish.
• Orange Roughy.
• Salmon (farmed)

Top 15 World’s Deadliest Dogs

• 1 Cane Corso. A breed that has been used as a guard dog for centuries, the “Italian Mastiff” has an intimidating appearance.
• 2 Dogo Argentino.
• 3 Rottweiler.
• 4 Pitbull.
• 6 Neapolitan Mastiff.
• 7 Rhodesian Ridgeback.
• 8 Chow Chow.
• 9 Doberman Pinscher.

• Wolf Hybrid.
• Bullmastiff.
• German Shepherd.
• Alaskan Malamute.
• Perro De Presa Canario.
• Caucasian Shepherd.
• Doberman Pinscher. Weight – Male (40-45 kg), Female (32-35 kg) ; Height – Male (60-70 cm), Female (63-68 cm)
• Great Dane. Zeus – World’s Tallest Dog.

Any dog that is attacking or even worrying or chasing any other animal may be shot. This means that you may be legally allowed to defend not only yourself but also your animals, with deadly force. The biting does not even have to have commenced. If the dog is no longer a danger, do not shoot the dog.

What is the Hardest Dog to Potty Train?

• Dachshund. Dachshunds are smart but stubborn.
• Bichon Frise. As a toy breed, the Bichon Frise is an adorable dog — that is, when they’re not having an accident on your carpet.
• Dalmatian.
• Jack Russell Terrier.
• Afghan Hound.
• Pomeranian.

These Are the Easiest Dog Breeds to Housebreak

• Kai Ken.
• Labrador retriever.
• Maltese.
• Miniature schnauzer.
• Shar-pei.
• Shiba Inu. Cleanliness and obedience are two different things.
• Shih Tzu. They can be stubborn, but they like treats.
• Standard poodle. They’re highly intelligent.