Improved transcript:

Panel 1: Jon is holding out a chicken leg with a condescending expression while Garfield observes stoically. Jon says: “Come on, kitty. Sing your song.”

Panel 2: Jon looks on dumbfounded while Garfield leaps up and becomes a whirling storm of claws and teeth around Jon’s still-outstretched arm.

Panel 3: the chicken leg is now a mere bone, and Jon’s hand is scratched and bruised, his shirt-sleeve torn to the elbow. Jon stares at it traumatized as Garfield walks away, mouth full, thinking: “Doo-da, doo-da”.

Commentary:

Let us all attend to this useful instruction. idk wtf Jon was expecting. that Garf would meow or something? maybe it woulda been funny if Garf had done a little tap dance or something but Garf doesn’t play that. In general I haven’t known a lot of cats who beg for their food, and I suspect they don’t enjoy it in the same way that dogs seem to.