You ever read Gould's Wonderful Life, Kisota? It's got kind of the same vibe you describe; you might like it a lot. It deals a lot with Cambrian fauna, which is always wondrous (even if a lot of it is, like Sagan's stuff, sadly outdated; the reconstruction of Hallucigenia was wrong), and with evolutionary contingency.
I have finally, finally, finished the Shadows of the Apt series, which is about the life and times and giant battles of the Bug People. The series is pretty good, though long (ten books, none of them particularly short). The characterization is pretty talented, the worldbuilding is well done, and the larger ideological struggle between the absolutionist imperialism and liberalism is engaging.
"If you are worthy of his affection, a cat will be your friend but never your slave. He keeps his free will though he loves, and will not do for you what he thinks unreasonable; but if he once gives himself to you, it is with absolute confidence and fidelity of affection." -Theophile Gautier