Read More: Bustle.com
One of the key elements of Adam Ellis’ Dear David Twitter tale is his cats. Throughout his ordeal, as he’s attempt to figure out whether his apartment is actually haunted and whether the alleged ghost stalking him is trying to kill him, he’s posted pictures and videos of his two cats doing weird things — prompting many to ask, can pets see ghosts? Is that why the cats keep gathering by the front door to Ellis’ apartment at the same time every night? Are they responding to Dear David’s presence? Or is it more easily explained than that? The strange behavior of Ellis’ cats showed up early in the story; they were part of the very first thread Ellis tweeted about the whole thing. To recap, he began by telling us that he had first had a series of dreams: One in which a boy with a misshapen head appeared on a rocking chair in his bedroom before starting to come after him threateningly; one in which a girl shared both Dear David’s name and a few rules for how to communicate with him; and one in which Ellis asked Dear David some questions and accidentally broke one of the rules. Some time went by; Ellis was unable to find out anything about Dear David via the internet, and eventually he moved to the apartment above the one he had originally be living in. Then, he tweeted this: They'd been doing it like clockwork, he said. What's more, when he looked out the peephole, he said he could have sworn there was something on the other side — something… not necessarily of this Earth. So: Did Ellis’ cats start sensing Dear David’s ghost in the real world sooner than Ellis did? Maybe— although it depends on how you feel about the existence of ghosts in the first place. What we do know is that cats have keen senses; indeed, their eyesight is often better than human vision is. A study published in 2014, for example, found that dogs, cats, and other mammals — that is, a lot of the types of animals that humans tend to keep as pets — might be able to see ultraviolet light. Humans, however, can’t see that type of light — which means that, yes, your pet can likely see things that aren’t visible to you yourself. So, when it looks like they’re reacting to nothing, they’re actually probably reacting to things you just can’t see.