bouncefactor {r}
~This command determines bounce effect after touching ground while falling to ground. It works even if entity is falling while playing non-FALL animation.
~{r} is bounce ratio which controls bounce effect. If it's set to 1, entity will bounce forever. If it's set to 2, it will bounce longer than normal. Any bigger value has slight difference.
~Normally this is used in FALL animation however it also works with other animations.
~This command won't have any effect if 'bounce' (see above) is set to 0.