Dementia is one of the greatest challenges facing humanity in the 21st century.Responding to the global dementia challenge, however, affects more than humans alone.We live in a multi-species world but often think about dementia in mono-species ways.From the lab to the living room, other beings are “on the scene” and our relations with them affect how we understand, experience, and respond to dementia.Drawing on cutting-edge work across the social and biological sciences, this book offers readers the tools to respond to dementia in multi-species ways.By exploring a range of topics, from pathology to personhood, contributors highlight how thinking about dementia as a more-than-human phenomenon may enable new ways of responding to our global dementia challenge.