You know how lizards make their throats swell up and get real big?  And you know how when cats get mad their hair stands on end and they bulk their bodies up to make themselves look bigger? And you know how puffer fish swell up all over and look like basketballs?  WELL, apparently Thoren can do something similar when he's really, really, really happy. Lizards, cats, and puffer fish all have a reason why they swell up, as it serves unique purpose in nature for each creature. But WHY does Thoren get fat when he's happy?  It's an enigma that will continue to haunt us. But that's ok, we love our little fat, happy baby! We are afraid to tickle him, for fear that we will end up having to put him in weight watchers!