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The Tiger Is Only Orange to Us

A saved tweet claimed that a tiger's famous orange is a kind of accident of the viewer: to a deer, the same coat reads as green.

7 catches · Ratoath · 5 days

A saved tweet claimed that a tiger's famous orange is a kind of accident of the viewer: to a deer, the same coat reads as green. Five days later, a Saturday in Ratoath put an actual tiger in front of the idea. The question walked around the enclosure all afternoon: what exactly are we looking at when we look at that colour?

A fact worth testing

It started as one of those saved posts that lodges in the head: "Tigers look orange to humans because we are trichromats, but they appear green to deer and wild boars because they are dichromats" [1]. The camouflage is not for us. We are the only ones in the forest getting the full show.

[1]

Tigers look orange to humans because we are trichromats, but they appear green to deer and wild boars because they are dichromats. pic.twitter.com/fUYtKPmD8M, Puppies & Positivity source

Then, an actual tiger

At the park the tiger was doing ordinary tiger things, pacing its enclosure among the trees and barrels [2], then batting a blue toy barrel around like an oversized housecat [3]. Against the grass and the water feature, the orange is almost absurdly loud [4]. A cheetah in the next enclosure made the contrast sharper: built for the chase, coloured to disappear [5]. The tiger, to human eyes, is coloured to be found. Some shots came through reflective glass, enrichment toys and rocks doubled in the pane [6], which felt fitting, the whole visit was about how much the viewer changes the view.

What the deer never sees

The last photo is the tiger at rest behind a metal fence [7], all that orange laid out in the open. To a boar walking past, this would be a patch of green among green. The tweet stopped being trivia and became a caption for the whole afternoon: the most conspicuous animal in the park is, to the eyes that matter, invisible.

[7]

a tiger resting in a zoo enclosure behind a metal fence

a tiger resting in a zoo enclosure behind a metal fence

One saved fact, one Saturday, one tiger. The orange that fills every photo is a colour the tiger's prey has never seen, which means these pictures show something only humans get to see.