Hey, if it wasn’t for Peanuts, Garfield wouldn’t be anywhere near as popular as it was, and not least because Charles Schulz was a mentor of sorts to Jim Davis.
Based on the anecdote on Schulz’s Wikipedia page, Schulz may have been the first person to draw Garfield standing on two legs, as he (the cat) is best known, tacitly giving permission for Davis to steal that part of Snoopy’s design.


Davis himself had already kind of put Garfield on his hind legs, but his legs and feet were one enormous mass because he was a chunky cat. Davis clearly hadn’t had the idea to make the legs spindly and Snoopy-like, or else he didn’t think he could do that and not be in trouble from people like Schulz.
When Schulz drew Garfield with Snoopy legs, Davis was able to take that idea and run with it.