The wallaby has an interesting self-defense technique. It uses its tail to whack whatever is threatening them - kind of like using the pool noodle to whack your annoying sibling when you were at the pool when you were younger. Anyway, wallaby tails can be as short as 33 centimeters (12.99 inches) and as long as 75 centimeters (29.53 inches).
The wallaby tail is much like that of a kangaroo. There are bones in the tails, which gives it quite the punch. This allows the wallaby to swing it side to side, and to control that motion. If it didn’t have bones, muscles, and nerves, it would behave much like a limb that has fallen asleep. It’ll flop around and not be incredibly dangerous.