Alligator
(Alligator mississippiensis)
Alligator there are only two species of the above and Chinese..
Olive, brown, gray or almost black color with cream-colored underside. Prevalence in most of the American southern states but especially Florida and Louisiana with more than 1.5 million wild and approx. 500,000 farmed alligators..
Annually, approx. 33,000 wild and 280,000 farm animals in Louisana.
Differences from crocodile:
The shape of the snout is rounder, shorter and more powerful, canines not outside, has umbilical cord, likes only fresh water, does not have pores on the stomach (porosus), not as aggressive as crocodile, does not have salt glands - glands to exchange salt water. Average age 50 years, length 3-5 meters, average weight 360 kg up to 450 kg. Speed in water up to 43 km / h.m/t.
Horns are 2-2-2.

Saltwater crocodile
(Crocodylus porosus)
Largest live reptile over 6 meters and over 1,000 kg. Males are almost twice as big as females. The pores on the abdomen are thought to be small sensory organs that detect movements under it. Travels just as well in salt water as fresh water. Many species. Lives in the tropics of Africa, Asia, the Americas and in Australia. More than 200 million years have changed little on the crocodile. The Nile crocodile has no pores. The shells on the stomach of a crocodile are more evenly sized than in an alligator - it can be seen even more clearly on the flank. Strongest bite of all animals more than 2 tons jaw pressure. Oldest crocodile about 130 years. Maximum land speed is 17 km / h..
Head balls on the nape of the neck are 4-2.

Caiman crocodile
(Caiman Yacare)
Prevalence especially in parts of Argentina, Bolivia, Brazil and Paraguay. Much like an alligator (in the same family) with a round snout but smaller - usually 2-3 meters long. Eats i.a. Piranha and birds. Caiman has clear bone plates on the abdomen and tail. The flank has round rings such as the two above, but the rings sit closer to an alligator. Headsets on the neckline are 4-4-2.

Austria
(Struthio camelus)
Flyless bird from Africa. Many species. Highest land speed 74 km / h. Has the largest eggs in the world weighing approx. 1.4 kg each. Breeding. The ostrich is used for food, the skin for leather and the feathers for dusting. It weighs up to 130 kg. Height up to 2.8 meters with a wingspan of two meters. Life expectancy max 75 years. Thrives best in the desert or semi-desert. Kicks only forward.

Lizard
(Black & White Tegu (Teju) Lizard) (Tupinambis Rufescens) Red Tegu -Argentina or Java Lizard (Varanus salvatore) - Malaysia..
The biggest difference is precisely the size. Teguen is small 1 1.4 meters, the varan large up to 2 meters. Tegus are the most intelligent of the lizards. Life expectancy 15-20 years. Distribution of rainforest areas in eastern and central parts of South America. Goes to sleep in late autumn. The monitor lizards have many names and types in Africa and South Asia as well as Australia. They are carnivorous. Komodo Dragon is the scariest and can take people..

Spotted eagle ray
(Aetobatus narinari) or Row Stone Stingray
Lives in depth down to 80 meters. Available globally in tropical waters. Has white dots or rings on the body. Eat crabs, shrimp, and shells. Wing span up to 3 meters and a weight of 230 kg. Has 2-6 poisonous spikes (stingers). It can be as large as 35 cm. If the spike breaks, a new one grows out. At the British Museum, spear and arrowheads of the spike used in Micronesia are on display. Great sharks and especially hammerhead sharks are its worst enemy. Not aggressive towards humans.

Yellow Anaconda      (Eunectes Notaeus good swimmer Latin) is smaller than the green approx. 3.3 4.4 meters long. Choking snake. Lives in the southern parts of South America such as Brazil, Bolivia and Argentina. Liver in swamp. Hunting from ambush. Lives on birds, eggs, lizards, some fish etc. In nature it is approx. 20 years somewhat longer in farm. Weighs approx. 25 35 kg. . The shells are from the underside of the hose..  

Python (Pythonidae) Choking snake. Not toxic. Robust and muscular. Body length from 0.45 m - 9 meters. The pancreas is small. Egg-laying. Heat demanding. Lives in sub-Saharan Africa, in Asia (India, Sri Lanka, etc.), Australia and now also released into the wild in Florida, U.S.A.