Me and my mums cat Casper was in an rta about a year ago which resulted in him losing a rear leg.
Initially he found the loss of his leg hard, especially as he was confined to a cage after to op. Slowly he started to get used to having only the three legs and not long after his op, he went for a walk along the hall. Here's a video of him.
http://smg.photobucket.com/albums/v96/moonshine_84/?action=view¤t=Casper1.flvHe was stressed for several months after the op and would have strange crying episodes, he was also considerably more angry and agressive than previously. Nowadays he is back to his old greedy, picky self. He goes out in the garden under supervision and has a friend in the shape of a big fluffy ginger cat called Horace who comes round to the back door to see if Casper can come out to play. He has some amazing turns of speed, aparently 3 legs are as good as 4 at speed.
here are some pics of his progress:
not long after the op
recent piccy in my parents garden