Eight division world champion Manny Pacquiao is once again under fire for making controversial comments against gay marriage.

The conservative fighter is running for a Senate seat in his native Philippines, and in a new interview, he has suggested those fighting for same-sex rights should look towards the animal kingdom for guidance.

"Woman was made for man, man was made for woman. It's common sense," the devout Catholic said in a video interview that was posted on Facebook. "Will you see any animals where male is to male and female is to female (sic)? The animals are better. They know how to distinguish, male or female.

"If we approve male on male, female on female, then man is worse than animal."

His remarks have already upset gay rights activists and blogger Perez Hilton has taken aim at Pacquiao for his comments.

The gay pop culture icon raged, "Look, if your religious beliefs prevent you from accepting same-sex marriage, that's on you. That's YOUR idea of propriety.

"But there's absolutely no call to demonize and denigrate gay people by comparing them to animals just because their love is something YOU'RE unable to accept."

"The sad thing here is that Pacquiao is world famous and a national hero as a boxer, so we can only guess he'll win his election to the Senate pretty easily, and then spread this awful attitude around within his country..." Perez added. "This is horrific."

Pacquiao previously said he loves and supports gays and lesbians, but does not approve of gay marriage and opposed U.S. leader President Barack Obama's support for same sex unions.

"I'm not against the gay people," Pacquiao told The Associated Press. "I'm not condemning them... I have a cousin (who is) gay. I have relatives (who are) gay. I have a lot of friends (who are) gay, so I'm not condemning gays. What I said is I'm not in favor of same-sex marriage."

Pacquiao returns on April 9th in a trilogy bout with Timothy Bradley at the MGM Grand in Las Vegas.