ok so i rescued an orphan wildie, he was 1 week old when i got him, and he barely had any fur. now he's growing up (about a month old), and i'm planning to get him a friend soon . since he didn't have his eyes open when i got him, i'm 100% sure he's never seen another rat. i'm just wondering, is this a problem? what's the best way to introduce him to his new pal? and what age should i get? (bare with me, this is my first rat ever!) i don't want him to be freaked out by the newcomer but i don't want him to be lonely either.