His books include What a Difference a Dog Makes: Big Lessons on Life, Love and Healing from a Small Pooch; Sing Me Back Home: Love, Death and Country Music; Me, Dad and Number 6; Lonesome Standard Time; Women of Granite; and Mosquito Games.
At the Times since 1993, Jennings has written or edited for Sports,[1] Arts and Leisure,[2] New Jersey weekly,[3] Travel,[4] the City section,[5] Education Life,[6][7] Culture,[8] The New York Times Book Review,[9] and Escapes.
[12] Jennings was diagnosed with aggressive prostate cancer in 2008, and he wrote about his illness and recovery extensively for the New York Times' Well Blog.
[13][14][15] Jennings is currently working on a graphic novel - "Toxic Youth: Memories of a Factory Boy" - a thematic follow-up to his 2021 sketchbook exhibit at University of New Hampshire titled Toxic Youth.
Jennings can frequently be found walking among the bison in the Rocky Mountain Arsenal.