He doesn't necessarily beg for a feeding (sometimes he does) but if I offer formula he will readily take it over pellets. Maybe I am misunderstanding what you guys are meaning.
My goffins is one of the best eaters I have ever had. He eats TONS of different stuff..pellets, bread, veggies, fruit, tuna fish, chicken, turkey, eggs, oatmeal..I actually would be better off listing the things he DOESN'T like to eat. LoL