a carcass, in the simplest terms, is a dead body. Specifically, it is used to refer to the physical remains of an animal after it has died. It may also be used more loosely to refer to the remains of a plant or organism. Examples of similar usage include carcasses of ships or buildings.
in the context of animals, carcasses are often used to refer to unprocessed animal remains that have already been skinned and/or eviscerated. This can also relate to the final remains of a creature after it is processed for consumption (such as a deer or a fish).
1. The hunter searched the forest for the carcass of the deer he had just killed.
2. Several vultures feasted on the large carcass lying in the middle of the desert.
3. The pervasive smell of rotting carcasses left a bad taste in everyone’s mouth.
when referring to a human body, it is best to use the word 'corpse' rather than 'carcass' in order to be more respectful and less morbid.