Utagawa Hiroshige, Jumantsubo at Susaki (Fukagawa), One Hundred Famous Views of Edo, ca. 1857.
This is a hinny. It is the combination of a male horse (stallion) and a female donkey (jenny or jennet). Like its counterpart, the mule (horse mare/donkey male), hinnies are infertile.
That is why this one has a vendetta against you and your personal choices in fashion.