Rats are much smarter than mice...which is why I am happy I no longer need to raise any for food. I had pet rats long ago, before I ever got into snakes, & they're
trainable & affectionate. Mice are pretty & cute, but have nothing like the personality that rats do, & rats are better parents also. All my mice are fancy...white ones
are rare here, lol. I used to have silky & satin mice but while pretty, they just didn't breed as well. I got into breeding my own feeders shortly after getting my first
snake, as the size feeders I needed were generally not available...plus I know they're healthy & fed well. (they get bits of kale & such things for extra nutrition)