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The expression comes from an ancient anecdote that crocodiles weep for the victims they are eating. A collection of proverbs attributed to Plutarch suggests that the phrase "crocodile tears" was well known in antiquity: comparing the crocodile's behaviour to people who desire or cause the death of someone, but then publicly lament for them. [1]
Salt gland of a bird and its inner structure Magellanic penguin. The avian salt gland has two main ducts: a medial and a lateral. Salt gland activations occurs from increased osmolarity in the blood, stimulating the hypothalamic information processing, sending a signal through the parasympathetic nerve activating vasodilation, the release of hormones (acetylcholine and vasoactive intestinal ...
Crocodiles (family Crocodylidae) or true crocodiles are large, semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia.The term “crocodile” is sometimes used more loosely to include all extant members of the order Crocodilia, which includes the alligators and caimans (both members of the family Alligatoridae), the gharial and false gharial (both ...
This explains why individuals at 6 m (20 ft) weigh more than twice as much as individuals at 5 m (16 ft). [30] In crocodiles, linear growth eventually decreases and they start getting bulkier at a certain point. [34] Saltwater crocodiles are the largest extant riparian predators in the world. However, they start life fairly small.
Scientists believe rare rescue is a sign that the fearsome reptiles may be capable of compassion
Compared to crocodiles, alligators digest more carbohydrates relative to protein. [107] Crocodilians have a very low metabolic rate and thus low energy requirements. They can withstand extended fasting by living on stored fat. Even recently hatched crocodiles are able to survive 58 days without food, losing 23% of their bodyweight during this ...
Crying is the dropping of tears (or welling of tears in the eyes) in response to an emotional state or physical pain. Emotions that can lead to crying include sadness , anger , joy , and fear . Crying can also be caused by relief from a period of stress or anxiety , or as an empathetic response.
For example, the behaviour of crocodiles "is constructed in interaction, both between people and crocodiles, and among people"; [5] markedly different results depended on "institutional arrangements and attitudes towards sharing a dam with crocodiles" in different villages in Benin, where knowledge of crocodile habits reduced attacks. [5] [6]