PT25.S2.Q19 - in all mammalian species

Grace...

http://7sage.com/lsat_explanations/lsat-25-section-2-question-19/
I do not understand how the answer choice C is supported at all. What part of the premise supports answer C? Thank you.

harrismegan

P25, S2, Q19... it says the answer is B, not C.

c.janson35

Answer choice B has absolutely no support and therefore is the least supported by default. You can't use information solely about mammalian species to prove something about non-mammalians, so good job on that.