The reason for the aggressiveness of the platypus is that it is very territorial. If someone intrudes into their territory, they realize the danger and attack to show the enemy that they are in danger. In addition to this, they are also extremely vigilant in order to prevent harm from the outside world, and through this vigilance they are able to protect themselves.

The duckbill fish is a very peculiar looking fish, with a beak that really does look like a duck, but is several times longer. It is a kind of species that has been possessed in the time of dinosaurs, and after hundreds of millions of years of evolution, it has also formed the duckbill fish in people's mouth. The fish is also very easy to breed and can survive in both freshwater and the ocean.

This fish has a very strong ability to adapt to the environment, and the growth rate is also very fast, although it seems to have a gentle character, but in fact it has a strong aggression towards people. This is a natural tendency to be very possessive of territory. Once someone intrudes on their abilities, they will demonstrate to others by attacking to scare them off.

Even when they are in a familiar environment, they are still highly vigilant, and when a suspicious species threatens their existence, they will demonstrate their ability by acting in a number of ways to send out a warning. Through this way is also a kind of self-protection, so as not to be harmed by the outside world.

So when a platypus is aggressive towards humans, it means that the human is threatening the survival of the platypus and violating their territory.