[There are] five that are tamin and five that are muadin: An animal is not muad —- neither to gore, nor to push, nor to bite, nor to lie down, nor to kick. Shen is muad to eat what is fit for it; regel is muad to break as it walks; the muad bull; the bull that damages [while] on the premises of the damagee; and man.  The wolf, the lion, the bear, the leopard, the bardelas, and the snake are muadin. R' Eliezer says: When they are domesticated, they are not muadin; but the snake is always muad.  What is [the difference] between a tam and a muad? Only that the [owner of the] tam pays half the damages from its body, and the [owner of the] muad pays the full damages from the best of the property.