if I had paid attention to Fr Rooks during logic class

I would know the name of this logical fallacy.

Ask the experimenters why they experiment on animals, and the answer
is:Because the animals are like us.Ask the experimenters why it is morally
OK to experiment on animals, and the answer is:Because the animals are not
like us.Animal experimentation rests on a logical contradiction. -
Charles R. Magel, professor of philosophy

In the first case, the similiarity is physiological and chemical. In the second case, the difference is on the level of consciousness. The argument is intellectual dishonesty using bait-and-switch tactics. Clever but no cigar!