The picture shows the alligator 's wide round jaw - the caiman crocodile which actually belongs to the alligator genus also has this. Alligator has a jaw pressure of 2 tons. The crocodile has a sharper design. The first two have their teeth hidden while the crocodile has poor orthodontics with many teeth outside and clearly visible. The crocodile is considered more aggressive than the other two. The horns on the neck have different numbers on the three reptiles. On the stomach, the crocodile has a small dot in each shell, which is probably an"antenna"that sends signals. Alligators do not have this. If you find a women's bag with a dot in each scale - then it is the real thing. There are also differences between freshwater - and saltwater crocodiles - not only in size but also among others. other sphincter in the throat. A saltwater crocodile can move between freshwater and saltwater. Crocodiles are larger than alligators - an alligator is rarely larger than 10 feet. There are only two alligator colonies - American Alligator and Chinese Alligator. After 20 years of conservation of the alligator in the United States - there are more than 1 million wild in Louisiana and more than 1 million wild in Florida. More than 300,000 are farmed. Crocodiles are common in Asia and Africa and are in large numbers.