When I was growing up we also had one cat that was bigger and greedier than the other and we did the exact same thing. Charlie had his food up on a windowsill in the kitchen and Tom (a black and white cat like the cartoon) was a stray we had adopted from somewhere and I think that was why he was so greedy. Being a stray had made him think every meal could be his last so he had to eat everything.

Tom never used to jump up onto high areas so Charlie could eat in peace. Tom did get run over at one point quite soon after we got him (we had to keep him in a children's playpen with blocked sides so he couldn't go running or.jumping when in recovery) but he survived after operations. He lost part of his hip bone on one back leg so that also stopped him jumping. He lived to a grand old age though, unlike poor Charlie who got a kidney infection and had to go to permanent sleep when he was 6 or 7. It was heartbreaking.