Pennsylvania Democratic Senate candidate John Fetterman slammed his GOP rival Mehmet Oz on Tuesday, following a bombshell report on hundreds of dogs that died in experiments.

Fetterman shared a report titled "Dr. Oz's Scientific Experiments Killed over 300 Dogs, Entire Litter of Puppies"

A deep dive into scientific studies from Oz published between 1989 and 2010 was published on Monday.

Dogs, pigs, cows, rabbits, and rodents are some of the live animals that Oz's team conducted experiments on. According to the outlet, Oz did not kill the dogs himself.

Insider was unable to verify if animals had been killed. A representative for Oz didn't reply immediately.

Fetterman said that Dr. Oz is a puppy killer.

Fetterman continued to slam Oz for most of the day in reference to the content of the article.

I love my animals. Some people like Dr. Oz harm animals. Fetterman is writing in a new post. I need your help in keeping the #PuppyKiller out of the US Senate.

I LOVE my dogs Apparently some sick people like Dr. Oz get their jollies by harming animals...

We have a close race here in PA and I could use your help to keep the #PuppyKiller out of the US Senate https://t.co/nelNpgVs0U