Oldest cow – Guiness World Record Book – Big Bertha 48 y.o.
Jerome O’Leary of Ireland owned the record breaking cow Big Bertha. Jerome bought the cow in. Bertha was a Droimenn ( Friesian Holstein) native cow. Bertha had 39 calves in her lifetime with daughters living to 35 years of age. Bertha passed over on New Years Ever 1993 aged 48 years & 9 mths