Thumper had been abandoned along with nine of his siblings in a Redondo Beach yard. When they were rescued, vets found out that he had a rare neurological condition and couldn't use his back legs. So they made him an adorable tiny kitten walker! According to the Daily Mail:
PACT staff despaired of his chances.

'His neurological challenges... it's just so hard,' says Jane, breaking down.

'They don't survive environments like that.'

...'We got him in his walker, and from the minute we put him in, he took off,' says Jane.

Within weeks, Thumper was racing all over the place in his new walker - and strengthening his legs and back as he went.

When Thumper decided he was strong enough to go it alone, he made it clear to his carers he wanted the walker gone.
Thumper can get around on his own now, but "with a distinctive walk." The lil kitty is currently up for adoption. Aww! Somebody please take him home!