Find the odd one out in the list below.

Put the following in order of size; smallest first.

rabbit, hare, rat, mouse, hamster.

Put the following in order of size; smallest first. 

monkey, chimpanzee, orangutan, lemur, gorilla

Put the following in order of size; smallest first. 

deer, bison, goat, horse, donkey

Put the following in order of size; smallest first. 

viper, cobra, python, krait, rat snake

Put the following in order of size; smallest first. 

lizard, chameleon, crocodile, newt, alligator