Most people regard crocodiles as more aggressive than alligators, and this is true of some species.

大多数人关于鳄鱼的鳄鱼相比更积极，这是真正的某些物种。

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British man in Oxford, the UK, keeps 24 crocodiles and alligators in his back garden, the largest collection of crocodiles in the country, the Daily Mail reported.

据英国《每日邮报》报道，英国牛津一男子在家中养了24只鳄鱼当宠物，他家后花园也成为全英国最大的“鳄鱼聚居区”。

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Alligators differ from crocodiles by the shape of their mouth.

美洲鳄与鳄鱼不一样，嘴的形状不同。

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The Everglades is the only place on Earth where fresh water alligators and saltwater crocodiles live in the same area.

VOA: special.2009.06.30

Other large tropical reptiles, such American crocodiles, tend not to avoid the cold, whereas temperate species, such as American alligators, do, and will retreat to warmer refuges when temperatures fall.

BBC: Earth News - Cold snap in Florida halts advancing python snakes