Okay kiddo, let me explain peripatric speciation in a way that you can understand. Imagine you have a big group of animals that live in the same area, like a forest. But then, one day, a few animals from that group get separated from the rest and end up in a different part of the forest, where conditions are different.
Let's say that in this new part of the forest, there's less food and water, and also different predators. These animals have to adapt to survive in this new environment. Over time, they might start to look and behave differently from the animals back in the original group. This is called speciation, which means that they become a new species.
The reason it's called peripatric speciation is because "peripatric" means "near the outskirts". It's like those animals are on the outskirts of the original population, and they're forming a new group all by themselves.