Yes, they can!
- Boars Living Together
A very informative reference thread about the misconceptions of having multiple males in the same cage. - Boar Stories 2
Wonderful stories and photos of happy, bonded male pigs. - Attention Multiple Boar owners...
More stories of happy, bonded male pigs.
Cavy Spirit: Social Life
Cavy Spirit's great page on the social life of the guinea pig. ( www.CavySpirit.com )