I THINK THAT THERES ALWAYS ONE KITTEN WHO IS A LITTLE BIGGER, MORE MATURE THAN HIS LITTERMATES, AND THATS WHY MOXIE MAY BE COMING ACROSS AS AGRESSIVE.
HES JUST A LITTLE HUNGRIER.

AND IT EVEN HAPPENS WITH CATS WHO LOVE EACH OTHER, PLEASE SEE EXAMPLE WHEN THE HOTEL SERVES FANCY FEAST FOR LUNCHEON.