Okay kiddo, do you know what happens when two animals have babies? They can look like their mom or dad or sometimes they can even have a mix of both. That's what we call a breeding.
Crossbreed is kinda like that, but it's when two animals that are different breeds, like a poodle and a Labrador, have babies. And those babies are called crossbreeds. It's like having a mix of both poodle and Labrador traits.
Sometimes people crossbreed dogs to try to get the best of both breeds, like if they want a dog that's smart like a poodle but also friendly like a Labrador. But it's important to remember that crossbreeds are still their own unique animal and should be loved and taken care of just like any other pet.