Pet photgraphy -Mice.

[Will0W783]

I like the colors on the second mouse. He reminds me of a peanut-butter cup, with the darker on top and tan peanut color on his belly. Mice are really cute little critters; I work in science though, so I've seen some nasty mouse stuff.
I've seen mice kill and dismember each other while breeding, eat their own babies, etc.
Are all mice like that, or is that a problem for inbred lab mice specifically?