Andy Loyola was arrested after he was allegedly caught having sex with a cow which had been reported missing by its owner in Silang, near Manila.
The man was caught with his pants down while sexually abusing the cow near a highyway. The farmer reported the man and he was subsequently arrested.
Loyola was believed to be under the influence of drugs when he was arrested.
Police said various drug paraphernalia were seized from the suspect during his arrest.
It was claimed that Loyola also sexually abused another cow in a nearby town.
The cow apparently was found to be pregnant following the assault.
Police said the cow may undergo medical examination after the owner claimed his cow became pregnant as a result of the attack.
The suspect is now detained at the Silang municipal jail.
He is facing charges of violating the Animal Welfare Act.