Okay, I never expected to see this:
Swarms of pigs have been found with neon blue skin after ingesting life-threatening pesticides.
The electric blue-skinned hogs were first reported in Monterey County, California in March when trapper, Dan Burton, discovered several wild pigs with blue fat and muscle. He told LA Times: “It’s wild. I’m not talking about a little blue. I’m talking about neon blue, blueberry blue.”
The feral swine are thought to have ingested the rat poison from dyed bait or feeding off other infected species.

Wow. Assuming that all the above is true and not some cock-and-bull story cooked up by The Usual Suspects, I’m not at all sure how to comment.
I’ve never supported using poisoned bait to keep vermin under control, for the same reason that I don’t support fishing with explosives: a bullet has one intended target, whereas both explosives and poison are simply labeled “To Whom It May Concern” — i.e. it’s indiscriminate targeting.
However: there are two known facts extant. The first is that wild pigs are becoming a pest on a national scale. In Texas, you don’t need a permit to hunt them, and when you do there’s no bag limit, wild pigs being regarded as vermin. Texas farmers not only allow pig-hunters on their property, they welcome them.
The second fact is that the state of California has the same regard for hunters as landowners have for vermin. California, more than almost any other state, hamstrings the practice of hunting with all sorts of nonsensical regulations, even in the remotest parts of the state. So landowners, not wanting to draw attention from the state’s feral bureaucrats and law enforcement, simply use other means to control the population — such as poison.
I’m not saying I agree with the practice, but I sure as hell understand it.
But that pic is still some kind of spooky, innit?