The "Learned Pig"

Wonderful book, akin to an early 19th-century version of the #MaskedMagician, in which the reality behind various tricks and illusions of the day are exposed - including that of the "Learned Pig" (shown here in the frontispiece to the book) —

 https://publicdomainreview.org/collections/the-expositor-or-many-mysteries-unravelled-including-that-of-the-learned-pig-1805/ …