73.—(1) A person commits an offence if—
(a)he intentionally performs an act of penetration with his penis,
(b)what is penetrated is the vagina or anus of a living animal, and
(c)he knows that, or is reckless as to whether, that is what is penetrated.
(2) A person (A) commits an offence if—
(a)he intentionally causes, or allows, A's vagina or anus to be penetrated,
(b)the penetration is by the penis of a living animal, and
(c)A knows that, or is reckless as to whether, that is what A is being penetrated by.
(3) A person guilty of an offence under this Article is liable—
(a)on summary conviction, to imprisonment for a term not exceeding 6 months or a fine not exceeding the statutory maximum or both;
(b)on conviction on indictment, to imprisonment for a term not exceeding 2 years.