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This comes as no surprise to some of you but I’ve been thinking about tyrannosaurs: how do those guys scratch themselves when they’re itchy? Their diminutive arms are only good for scratching parts of their chest. Their teeth are perfect for nibbling some regions and others can be reached with a good bear-style rub against a tree… but maybe they solve the problem the same way their closest living relatives do:

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This photo is from a set taken in April 2010, at London’s St. James’ Park. It’s one of those aspects of animal behaviour that all must engage in but few of us think about. When we picture pelicans we think of them catching fish but how often do we actually see them do it – compared to how much time they spend resting or engaging in social interactions?

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Even when eating, their diet is not just limited to fish and a pelican will think nothing of snacking on other birds’ chicks if the opportunity presents itself.

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So, in keeping with All Yesterdays, let’s not caricature our reconstructions to just one aspect of an animal’s behaviour: Maiasaura the good mother was probably irritable and territorial at times; Baryonyx did more than just hunt fish; tyrannosaurs stopped chewing their way through the Cretaceous and relieved their itches from time to time.

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