The All New Pew Pews

You may recall Pew Pew, the neighbor's dog that was hit by a car, paralyzing its two hind legs.  They stuck his legs in a plastic bottle, so it could drag itself around like nothing had happened.  And as if nothing had ever happened, it ran out into the street again and this time was not so fortunate.

Maybe two days later Haru shows up with not one, but two replacements.  Introducing Pew Pew II and Pew Pew III