I have two pigs named Theo and Gus. Theo is very dominant and always chases Gus to mount him. I went to Petsmart yesterday to get supplies and saw what looked like the saddest adult Guinea pig living alone in this small enclosure. I want to get him. Both to help him and hopefully to give more structure to my little herd. Any tips or advice? Is this a bad idea? Theo can be aggressive and I don’t want more showdowns.