Speaking to Digital Spy, the Force star, who is an ambassador for the charity, said he endorses it in every way.
"PETA - People for the Ethical Treatment of Animals. I've been very active with them," he remarked.
"PETA is an organisation that needs people to get up on rooftops and scream to make their cause heard. If they need someone to do that, I'll do that. If they need someone like John Abraham to jump on the roof, John Abraham will do that.
"It's because I believe in the cause of animals I'll do that. Animals can't speak. They are unduly hurt every time. I will always be an animal lover in my life. I endorse PETA in every way."
The Vicky Donor producer also spoke about his work for Habitat for Humanity and his fundraising initiatives through John's Brigade, saying: "As far as Habitat for Humanity is concerned, I think there is nothing more serious in life, besides blindness, than not having a roof over your head.
"There's a brigade in India. It's called 'John's Brigade.' I encourage people to come in and donate to John's Brigade for Habitat for Humanity. We make money so we can give homes to the poor.
"As of now we have built up over 50,000 homes in India alone through my brigade and I wish to build 500,000 more. I have a five year plan for that. I don't know how long it will take, but I will make it happen."
The 39-year-old actor was in London for the promotion of Vicky Donor, which releases on April 20, 2012.
> John Abraham: 'I will make the kind of cinema I believe in'
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Watch the trailer for Vicky Donor below: