Aggressive mimicry is when a creature pretends to be something it's not in order to fool other animals and prey on them. Imagine you’re playing hide and seek with your friends, but instead of hiding behind a tree or a wall, you dress up like a tree or a wall to trick your friends into thinking you’re not there. This is kind of what aggressive mimicry is like.
In the animal world, some predators use aggressive mimicry to catch their prey. For example, there’s a type of spider called the orb-weaving spider that builds a web like many other spiders. But instead of just sitting and waiting for prey to come to them, these spiders add a twist. They place a strand of web that vibrates like an insect caught in the web, luring other insects to the web. Once an insect comes near, the spider quickly pounces on them and captures them for dinner.
Another example of aggressive mimicry is the anglerfish. This fish has a long, thin “fishing rod” growing out of its head, with a fleshy bulb at the end that glows in the dark. The anglerfish uses this bulb to attract other fish that think it’s food or another fish to mate with. When the other fish swim too close to the anglerfish, it suddenly lunges forward and swallows them whole.
So, aggressive mimicry is like playing a sneaky trick on other animals in order to catch them and eat them. It’s a survival strategy for creatures that need to hunt and eat to stay alive.