Animal Communication:
The Inner Life of Animals: Love, Grief, and Compassion―Surprising Observations of a Hidden World
by Peter Wohlleben (2017)
Kinship with All Life
by J. Allen Boone (1976)
Communicating with Animals: The Spiritual Connection Between People and Animals
by Arthur Myers (1997)
Straight from the Horse’s Mouth: How to Talk to Animals and Get Answers
by Amelia Kinkade (2001)
Pet Loss:
Blessing the Bridge
by Rita Reynolds (2001)
There are No Sad Dogs in Heaven: Finding Comfort After the Loss of a Pet
by Sonya Fitzpatrick (2013)
Animal Stories:
Tails of a Healer
by Rose DeDan (2008)
Racing in the Rain
by Garth Stein (2011)
Nature:
The Hidden Life of Trees: What They Feel, How They Communicate―Discoveries from A Secret World
by Peter Wohlleben (2016)
The Secret Wisdom of Nature: Trees, Animals, and the Extraordinary Balance of All Living Things -― Stories from Science and Observation (The Mysteries of Nature Trilogy)
by Peter Wohlleben (2019)