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A unique feature of the venom is the presence of a D-amino acid. This is the only known such example in mammalian systems. [8] This venom appears to be related to that of several species that are not part of the platypus's evolutionary lineage, such as certain fish, reptiles, insectivores, and spiders, sea anemones, and starfish. [9]
This complex chemical cocktail is a dangerous defense, but it might also have beneficial qualities for humans as well. One hormone found in platypus venom, glucagon-like peptide-1 (GLP-1), plays a ...
The rat is known to deliberately chew the roots and bark of the poison-arrow tree (Acokanthera schimperi), so-called because human hunters extract a toxin, ouabain, to coat arrows that can kill an elephant. After the rat has chewed the tree, it deliberately slathers the resulting mixture onto its specialised flank hairs which are adapted to ...
The echidna spurs are vestigial and have no known function, while the platypus spurs contain venom. [42] Molecular data show that the main component of platypus venom emerged before the divergence of platypus and echidnas, suggesting that the most recent common ancestor of these taxa was also possibly a venomous monotreme. [43]
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. This article contains a compilation of lists from several reliable sources.
The platypus (Ornithorhynchus anatinus), sometimes referred to as the duck-billed platypus, is a semiaquatic, egg-laying mammal endemic to eastern Australia, including Tasmania. The platypus is the sole living representative or monotypic taxon of its family Ornithorhynchidae and genus Ornithorhynchus , though a number of related species appear ...
Envenomation is the process by which venom is injected by the bite or sting of a venomous animal. [1]Many kinds of animals, including mammals (e.g., the northern short-tailed shrew, Blarina brevicauda), reptiles (e.g., the king cobra), [2] spiders (e.g., black widows), [3] insects (e.g., wasps), and fish (e.g., stone fish) employ venom for hunting and for self-defense.
Pigs are competent predators and can kill and eat helpless humans unable to escape them. [30] [31] [32] Numerous animal trials in the Middle Ages involved pigs accused of eating children. [33] In 2019, a woman was attacked and killed by a herd of feral hogs in rural Texas. She died due to exsanguination (i.e. bled to death) from bite wounds. [34]