The sounds of pleasant, relaxed bird chatter made eastern grey squirrels resume foraging more quickly after hearing the sounds of a predator, researchers found. Mike Kemp/In Pictures via Getty Images hide caption
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A woman who boarded her Frontier flight with an emotional support squirrel (not this one) was escorted off the plane on Tuesday. Robert F. Bukaty/AP hide caption
Dancing and tapping their little happy feet, Blue Penguins in New Zealand no longer have to cross the road to get to their nesting area. They have their own foot-tall underpass. Penguins only, please. Marty Melville/AFP/Getty Images hide caption
To be clear, this squirrel — photographed in 2008 — is not the one that threw itself at a Chicago alderman's bicycle earlier this month. Taylor L. Riché/Flickr hide caption
This red squirrel has the disfiguring sores of leprosy on its ear. Dorset Wildlife Trust hide caption