You love a HORSE?

I am reading "The Comic World of the Marx Brothers' Movies" by Maurice Charney, which I don't recommend. Charney is a pedantic nitwit, who, if he actually met the Marxes, would be de-pantsed and thrown into a snowbank. However, there is one sentence that is funny, albeit unintentionally.

Of Harpo, he says, "He is on intimate terms with his horse."