Which pig breed is recognized for its brown/red color and floppy ears?

The Duroc breed is known for its distinctive brown or reddish color along with its floppy ears, which set it apart from other pig breeds. This breed is admired not only for its appearance but also for its hardiness, efficient growth rates, and excellent meat quality, particularly with good marbling. Durocs are often used in crossbreeding programs to enhance the overall qualities of pork production.

While other breeds have their unique characteristics, such as the Yorkshire with upright ears and a white coat or the Hampshire breed with its black body and white stripe, they do not match the brown or red coloration and floppy ears that define the Duroc. The Berkshire breed also stands out for its black coloration and erect ears, making it distinct in its own right. Thus, the Duroc breed's specific coloration and ear characteristic make it the correct answer for this question.