What animals do not poop?

As a biologist with a focus on animal physiology, I can tell you that all animals, with very few exceptions, do indeed produce waste as part of their digestive processes. The misconception that some animals do not "poop" likely stems from the fact that some animals have very different methods for waste elimination, which might not be immediately recognizable as feces.

Rabbits, for instance, have a complex digestive system that allows them to produce different types of waste. They produce soft, moist feces called cecotropes, which they re-ingest to extract more nutrients, and then they produce hard, dry feces that are expelled from the body.

Sperm whales are another example. They do produce feces, but it's not something commonly seen because they live in the deep ocean and their waste is quickly dispersed in the water.

Face mites, which are tiny creatures that live on human skin, do not have a digestive system that produces feces in the traditional sense. They feed on skin oils and dead skin cells, and their waste is likely absorbed back into the skin.

Orb-web spiders also have a unique way of dealing with waste. They produce a silk-like substance that encapsulates their waste, which is then discarded.

Vultures are scavengers that consume a lot of bones and tough materials. Their digestive system is adapted to separate the digestible and indigestible parts. The indigestible parts are often regurgitated as a pellet, which might not be recognized as feces.

Rhinos, like all mammals, do produce feces. Their waste is quite substantial due to their large size and herbivorous diet.

Caterpillars go through a process called molting, where they shed their exoskeleton. While this is not the same as defecating, it is a form of waste elimination.

Parrot fish have a unique excretory system. They excrete a sand-like waste, which is the result of their diet that consists of coral and algae.

It's important to note that the term "poop" is colloquial and refers to the feces of animals. Feces is the waste material that is expelled from the body through the rectum, and it consists of undigested food, bacteria, and other bodily waste. All animals, from the smallest insects to the largest mammals, have a system for eliminating waste, even if the method or the appearance of the waste differs.

Now, let's move on to the translation:

作为一名专注于动物生理学的生物学家，我可以告诉你，几乎所有的动物都会作为其消化过程的一部分产生废物。一些动物不“排便”的误解可能源于一些动物有不同的废物排出方法，这些方法可能不会立即被识别为粪便。

兔子，例如，有一个复杂的消化系统，允许它们产生不同类型的废物。它们产生一种叫做盲肠便的柔软、湿润的粪便，它们重新摄取以提取更多营养，然后它们产生硬的、干燥的粪便，这些粪便从体内排出。

抹香鲸是另一个例子。它们确实会产生粪便，但由于它们生活在深海中，它们的废物很快就会在水中散开，因此不常见。

毛囊螨是生活在人类皮肤上的微小生物，它们没有传统意义上产生粪便的消化系统。它们以皮肤油脂和死皮细胞为食，它们的废物很可能被皮肤重新吸收。

园蛛也有一个独特的处理废物的方式。它们产生一种类似丝绸的物质，将废物包裹起来，然后丢弃。

秃鹫是食腐动物，它们消耗大量的骨头和坚硬的材料。它们的消化系统适应了将可消化和不可消化的部分分开。不可消化的部分通常作为小团块反刍出来，这可能不会被识别为粪便。

犀牛，像所有哺乳动物一样，确实会产生粪便。由于它们的体型庞大和食草性饮食，它们的废物相当可观。

毛虫经历了一个叫做蜕皮的过程，它们会脱掉外骨骼。虽然这与排便不同，但它是一种废物排出形式。

鹦鹉鱼有一个独特的排泄系统。它们排泄出一种类似沙子的废物，这是它们以珊瑚和藻类为食的结果。

需要注意的是，“排便”一词是口语表达，指的是动物的粪便。粪便是从身体通过直肠排出的废物物质，由未消化的食物、细菌和其他身体废物组成。从最小的昆虫到最大的哺乳动物，所有动物都有一个排除废物的系统，即使方法或废物的外观不同。

But these nine animals show that the rest of the critters on this planet doesn't always equate dung with disgust.Rabbits. Share on Facebook. ... Sperm whales. Share on Facebook. ... Face mites. Share on Facebook. ... Orb-web spider. Share on Facebook. ... Vultures. Share on Facebook. ... Rhinos. Share on Facebook. ... Caterpillars. ... Parrot fish.More items...