A hybrid pooch is a crossbreed of two different purebred dogs. The term 'MUTT' is often used to refer to a hybrid pooch, as it is a four-letter word that describes a mixed-breed dog. Hybrid pooches are created when two different purebreds are bred together, resulting in a unique combination of traits from both parents. Hybrid pooches can be any size, shape, or color, and they often have a longer lifespan than purebreds.