Agreed. But the other extreme of “extinct” is overpopulation, which creates a glut of animals who wander around starving and diseased in acute distress. They (as a whole) are in this state because we (as a whole) think they’re pretty and cuddly and breed them for pets. Therefore we have an achrayus to control their population numbers so as to eradicate the suffering that we caused.
A friend once said to me, regarding overpopulated deer that the city had tagged for observation, “they’d be doing them a greater kindness to just put a bullet through their heads”. That was hard for me to hear, but I have to admit that he was probably right.