Biology

Birds are one of the most common animals we see, especially birds like sparrows, turtledoves, pheasants and magpies, which are often seen in flocks. However, one thing that is strange is that with so many birds, we rarely get to see bird nests, why is that?

The sea otter is a very cute looking animal that is known to be a professional in being cute, and there are various expressions of it circulating on the internet for internet users to love. Sea otters are not only cute in appearance, but also in their activities such as eating, swimming and sleeping, which all reflect their cute side. In 2013, it was ranked fifth on the list of the world's cutest species.

The length of the giraffe's tongue can reach more than 40 cm, usually, they only need to use their flexible tongue to avoid the hard thorns of the acacia tree, and then gently roll, you can eat the leaves

In addition to being the most extensive river in the world, the Amazon is also the largest river in the world in terms of river volume

Species invasions are actually a very common occurrence on a global scale. Although there are countless species of organisms on the planet, these are distributed all over the world, with some species being endemic to certain areas and not present in others, and others having a relatively wide distribution. When some species appear in places where they would not have previously existed, this is when the species may become invasive.

Sloth monkeys, the world's only poisonous primates

It happens to be the season when mosquitoes and flies go wild, but it is true that there are not as many flies as there are mosquitoes today. This has a lot to do with our improved sanitation today, after all, flies need to lay their eggs on manure pits and rotting food, while many rural toilets have now been converted to squatting, and the shorter disposal cycle for waste has greatly reduced their hatching.

The hermaphroditic characteristics of the spotted hyena are completely opposite to those of humans, so is the social system of the spotted hyena also opposite?

During the long evolutionary journey, the brain capacity and the complexity of the nervous system of primates have been increasing, and correspondingly, their intelligence has become higher and higher as a result

These rabbits have caused an imbalance in the local ecosystem and brought a lot of trouble to the local people's lives. Or catch them and export them to foreign countries?