Here’s a lion having a cat scan . . https://www.livescience.com/61977-tomo-the-big-cat-gets-cat-scan.html …pic.twitter.com/WoQuPWeF3m
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In the case of the giraffe it looks like it might be dead, though? 
In this case, yes: "This giraffe was named Susie and lived at The Wilds (part of the Columbus Zoo system) in Cumberland, Ohio, where she died of natural causes in December 2003 at which point her head came to WitmerLab at Ohio University for research."https://www.youtube.com/watch?v=uMLaUikx9K0 …
So I guess it could be a severed head like in the one above. 
I did not want to know this
I'll be careful in future. Sorry.
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