You'll find the slogan, "A Rat Is a Pig Is a Dog Is a Boy" on the PETA website. Its meaning is really obvious. The variation of the trolley problem has a car headed toward a boy or a pig standing in the road. The driver can only avoid hitting one. Which one takes priority?
The origins of this twisted ethical creed go back to Peter Singer, an ethics expert who has advocated for euthanasia of the elderly and the murder of children born with disabilities. The idea that human life is sacred is "speciesm", which like racism or sexism, is a consciousness of privilege. Human life must be "unsanctified". And who is to say that a gorilla may not in some ways be superior to a 4-year-old child?
These are the ideological underpinnings of the debate. Everything else is a deliberate distraction.
And the debate is not about the life of a gorilla. A rat is a pig is a dog is a boy. The life of a little boy is not worth anymore than that of a pig.
If you thought that the left had reached its final moral abyss with its current obsession with getting men into the ladies room, buckle your seatbelts. You haven't seen anything yet.