It turns out that naked mole rats are the only mammals that are completely immune to cancer, and now scientists have figured out why. They're weird, ugly fuckers. They have an ant-like hive mind, they don't feel pain and they don't get cancer.

From PopSci:

According to the scientists, the mole rat's cells express a gene that tells cells to stop dividing. The gene, called p16, forms a second ring of defense against cancer. Most mammals, including humans, only have one gene, p27, protecting cells from cancer. And while most cancers know a way around p27, p16 stops them cold.

In the experiment, researchers gave cancer to a mole rat cell. However, unlike similarly altered mouse cells, the cancerous mole rat cell didn't engage in the non-stop proliferation associated with cancer.

Naked mole rats were already known for their extreme longevity, living much longer than other similarly sized rodents. This was thought to result from their ability to massively slow down their metabolism during times of privation, but this immunity to cancer almost certainly also contributes to their long lifespans.

Some other mole rat facts: their lips are behind their front teeth, they breathe mostly through their skin, and acid doesn't really burn them.

Thanks to clownpenis for the link and the nasty fucking pic.