You're pretty close! Excellent work on the snake especially.

mek (my clone/boyfriend) is the tall one. Jake (his roommate) is the long-haired one. I'm pretty sure he was actually at work when I posted, but he did come home with peanut butter cookies so my foraging comment seems valid. The two skittish ones are indeed cats, Oz belonging to mek and Luna belonging to Jake. The long one who eats the enemy (which you correctly deduced as mice) is West, a red-tailed boa, and the noisy green one is Hroderich, a giant green iguana. (His noise comes mostly from his rattling the chicken-wire walls of his cage.)

So yeah. Good guesses all around.

~Sor