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A white-headed dwarf gecko with tail lost due to autotomy. Autotomy (from the Greek auto-, "self-" and tome, "severing", αὐτοτομία) or 'self-amputation', is the behaviour whereby an animal sheds or discards an appendage, [1] usually as a self-defense mechanism to elude a predator's grasp or to distract the predator and thereby allow escape.
Under good conditions, a healthy female tapir can reproduce every two years; a single young, called a calf, is born after a gestation of about 13 months. [36] The natural lifespan of a tapir is about 25 to 30 years, both in the wild and in zoos. [37] Apart from mothers and their young offspring, tapirs lead almost exclusively solitary lives.
Piglets are born with erupted teeth, in order to avoid sow teat injury and damage between piglets, some farms clip their deciduous teeth. [1] Lesions caused by piglet teeth are superficial and mortality is lower among pigs that don't undergo painful procedures, including teeth clipping.
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However, some mammals' teeth do develop differently than humans'. In mice, WNT signals are required for the initiation of tooth development. [9] [10] Rodents' teeth continually grow, forcing them to wear down their teeth by gnawing on various materials. [11] If rodents are prevented from gnawing, their teeth eventually puncture the roofs of ...
Docking is the intentional removal of part of an animal's tail or, sometimes, ears.The term cropping is more commonly used in reference to the cropping of ears, while docking more commonly—but not exclusively—refers to the tail; the term tailing is used, also.
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The number of teeth and their function can vary widely between species, with some dolphins having over a hundred teeth in their jaws, while the narwhal has two functional teeth in its upper jaw which grow into long tusks in males. The tusk is used in feeding, navigation and mating and contains millions of sensory pathways, making it the most ...