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All octopuses have venom, but few are fatally dangerous. The greater blue-ringed octopus, however, is considered to be one of the most venomous animals known; the venom of one is enough to kill ten adult humans. [3] It uses the neurotoxin tetrodotoxin, which quickly causes respiratory arrest. Estimates of the number of recorded fatalities ...
Blue-ringed octopus from New South Wales, Australia. The octopus produces venom containing tetrodotoxin, histamine, tryptamine, octopamine, taurine, acetylcholine, and dopamine. The venom can result in nausea, respiratory arrest, heart failure, severe and sometimes total paralysis, blindness, and can lead to death within minutes if not treated ...
Deadliest animals as of 2016 [1]. This is a list of the deadliest animals to humans worldwide, measured by the number of humans killed per year. Different lists have varying criteria and definitions, so lists from different sources disagree and can be contentious.
The octopus is one of the most unexplainable animals on the planet, contested only by the platypus, the echidna, and the angler fish. And trust us, you don't know squat about what it can do.View ...
While demonstrating animal suicide itself in a lab is believed to be possible by some, [11] the ethics of driving an animal to kill itself are debated. [ 10 ] [ 12 ] In the field, it can be difficult to not only find examples of suicide, but to be certain that the death was intentional, not accidental.
The tetrodotoxin in blue-lined octopuses is so lethal that it has been estimated that the venom from a single 25-gram octopus can kill about ten 75-kilogram humans. [ 7 ] This tetrodotoxin known as TTX has been located in the posterior salivatory gland, anterior salvatory gland, arm, mantle, digestive glands, testes, brachial heart, nephridia ...
The common octopus can hear sounds between 400 Hz and 1000 Hz, and hears best at 600 Hz. [66] Octopuses have an excellent somatosensory system. Their suction cups are equipped with chemoreceptors so they can taste what they touch. [67] Octopus arms move easily because the sensors recognise octopus skin and prevent self-attachment. [68]
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