1. Size: Male pigs typically have larger, thicker bellies than female pigs.
2. Shape: Male pigs have a more rectangular-shaped belly, while female pigs have a more rounded belly.
3. Fat content: Male pigs typically have more fat throughout their body, including their bellies.
4. Belly-line: The middle belly line runs parallel to the length of the carcass of most female pigs where as its usually not a distinct line along male bellies
In general, pork bellies from male pigs are less expensive than pork bellies from female pigs because they have an overall higher fat content