Cymene and Dominic check in from Iceland on this week’s edition of the podcast and talk about the virtues of the Icelandic horse. Then (12:36) we welcome dear friend and horsexpert John Hartigan back to the podcast. We’ve come a long way since Episode 4 but it turns out John has been keeping pretty busy too. We start off with his new book, Care of the Species (U Minnesota Press, 2017) about human-maize relations and the science of plant biodiversity in Mexico and Spain. We talk about maize as an emblematic companion species as it both feeds and works humans on its own behalf, about John’s discovery that the concept of raza (race) was applied to non-humans long before humans, and what that implies for understanding the intersection of race and care today. This gets us to what nonhumans like sheep and cattle contributed to colonization, efforts to maintain plant biodiversity as a bulwark against the unknowns of climate change, the enduring power of taxonomical conceptions of species, plant sexuality under human care, and the modern tendency toward “plant blindness” in our relationship to the world. Finally, we do a lightning round of updates on John’s current suite of projects including an ethnography of the sociality of wild horses in Spain, a study of Peruvian bullfighting and a historical novel about the wreck of the Spanish armada in Ireland and the hidden cultural connection between Spain and Ireland that followed.