Anatomical structures fall into three categories: homologous, analogous, and vestigial. Vestigial structures are generally considered remnants from our evolutionary past, although there is some debate over this definition. Typically, vestigial parts are viewed as remnants of a structure that once…
As humans have evolved, certain anatomical parts that once played functional roles have become less functional and are often known as vestigial organs or structures. Some are considered physiological adaptations — one of the three types of environmental adaptations —…
It’s somewhat unsettling to realize that our body paralyzes itself during sleep. This occurs for significant periods of the night, allowing us to get the rest we need. You’ve probably heard of sleep paralysis, a frightening state where individuals become…
It’s a common misconception that dogs are entirely colorblind. This myth, perpetuated by TV, movies, and outdated research conclusions, leads people to believe that dogs can only see in black and white. However, contrary to popular belief, canines can perceive…
If you’ve ever watched any nature documentary, you’re likely aware that the animal kingdom is replete with fascinating and complex mating rituals. For instance, Great Blue Herons engage in elaborate courtship displays, while male whales use deep vocalizations during mating.…
Floating 250 miles above the Earth, astronauts aboard the International Space Station are not just orbiting; they’re gardening. In an environment with no up or down, no soil beneath their feet, and space’s vacuum pressing in from all sides, these…
Numerous domestic animals are crossbred to create new breeds. For example, in the canine world, a Siberian retriever results from crossing a Siberian husky with a Labrador retriever, while a cockapoo is a mix of a cocker spaniel and a…