Why Do Reindeer Eyes Change Color?
Reindeer eyes change color because a reflective layer behind the retina, called the tapetum lucidum, changes with the seasons. In Arctic summer, this layer reflects mostly golden light. During winter, it becomes deep blue, helping the animal detect light in the dim Arctic environment. Researchers ha...
Can Frogs Freeze and Come Back to Life?
Yes, some frogs can survive being frozen and become active again after thawing. The best-known example is the wood frog (Lithobates sylvaticus), which can tolerate ice forming in substantial portions of its body during winter. Its heartbeat and circulation may become undetectable during freezing, bu...
Why are there so many insects (the secret of thriving insects)
In our daily lives, we are directly or indirectly related to insects all the time. Especially in the season after spring and before the harsh winter comes, there are so many insects that you can see them everywhere. In addition to being bitten by mosquitoes and harassed by flies, if we are no...
Animals and Numbers: Is Animal Numeracy Innate or Evolution?
What would daily human life be like without numbers? hard to imagine. What about the animal world? Research over the past few decades has found that animals have the same "number sense" as humans and can use the concept of numbers in life; this number ability is not based on language abili...
What is the motivation behind animals' self-mutilation behavior?
In nature, in order to survive and mate, animals will engage in autotomy behavior or self-cutting behavior, including self-castration behavior. SoWhat is the motivation behind animals' self-mutilation behavior? 1. Cut yourself to save your life When some animal...
How did the dinosaurs become extinct? Have dinosaurs really disappeared?
There may be multiple versions of the story of the destruction of the world, and the extinction of life directly caused by an asteroid impact is only one of them. Were the massive climate changes that led to the extinction of the dinosaurs caused by volcanic eruptions? Or was it caused by an asteroi...