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>>> Also, with feathers, the animal would have to be able to preen daily, and
> be able be flexible enough to clean, delouse and keep there feathers oiled
> on a daily basis.  Small birds area able to use there feet to scratch and
> are able to move there head around to clean as well. Also the
> Struthioniformes, use use there long necks to get at the hard to reach
> places, were they cant reach with their feet. Though not positive if they
> even use there feet for preening either.<<
> Wooly mammoths, grizzly bears, St. Bernards (the dog), wooly rhinocerotes (I
> believe that was the consensus pluralization on this list a short while
> ago), and a menagerie of other large-and-shaggily-integumented mammals
> didn't seem to go extinct due to too many parasites, unless, in a
> "Matrix"-esque monologue, you want to rant about humans being parasites.  I
> don't think T. rex would have solved its parasite problems by not having any
> sort of feathery integument, it would have its ticks and such either way.

Isn't the attention given to keeping feathers clean more to do with
flight than anything else? If we were to suggest that T. rex was
feathered, then surely this wouldn't be a problem?

Unless someone has a paper in the works suggesting the tyrant was a
capable flyer ;-)