I just got another guinea pig, and put him in a 2x3 cage. He came from my boss's home whose son was no longer taking care of him. His cage is like 5 times as big now, but he won't eat. I put some of his old pellets (not a good kind) and mixed them with mine, and I put his old toys and lots of veggies, but he won't eat anything. I tried to put him on my lap and feed him but he kept turning away. Is he depressed? Oh yeah, he's a huge pig (compared to the two I have who are both less than than 9 weeks old), he's almost two years old too. Let me know what you think.