The book is full of awesome weirdness. You can just picture Ogilby in London trying to sort out the various accounts to determine what was real, what was not, and what might help sell books. One account he found compelling enough to reproduce as fact, and even illustrate, was a description of a "strange beast" living on the borders of Canada. It "hath some resemblance with a Horse, having cloven feet, shaggy Mayn, one Horn just on their forehead, a tail like that of a wild Hog, black Eyes, and a Deers Neck." Observers not only saw this mythical beast, they were able to note its strange habits:
...it feeds in the nearest Wildernesses: the Males never come amongst the Females except at the time when they Couple, after which they grow so ravenous, that they not only devour other Beasts, but also one another.Come see for yourself by asking for McGregor 129 (the unicorn is on page 173).