It is an offence exemption for an offence for a person if—
(a) the act that constitutes the offence involves using an animal (the
"food animal" ) as live food for another animal (the
"fed animal" ); and
(b) the food animal and the fed animal are both lawfully kept by the person; and
(c) the fed animal will only eat the food animal if it is alive; and
(d) feeding the food animal to the fed animal is essential for the fed animal’s survival.