Mozzaralla chesse from buffalo milk

hi rabbi
is a hecher necessery for mozzaralla chesse made from buffalo milk ? sold in costco and imported from italy , thanks

Yes a proper hechsher is required. The product needs a certification that it is gevinat yisrael.

What does gevinat yisrael mean? Aside from the simple translation?

hi , even though there is no rennant fir mozzerella chesse ? and forgive me if i am not correct but isnt the issur only for cheese from cows milk ? thanks for your time

Buffalo same as cow for these laws.
See above link regarding gezera on cheese.