What's a Chimera?

Chimeras are a diverse body of creatures that live all across Animuta, in towns, cities and nations! They may bear some resembelance to the animals living alongside us humans, but let me assure you: that's not a mink, that's a fish-ferret; that's not a bear, that's a bugbear; and that's not a chimera at all, I think, I... think that's a zombie. Why is it looking at me like that. No--no stay over there, you don't need to--HELP!!