Many of the qualities that come so effortlessly to dogs - loyalty, devotion, selflessness, unflagging optimism, unqualified love - can be elusive to humans.
Marley's Storybook Treasury: Marley's Big Adventure; Strike Three, Marley!, Marley and the Runaway Pumpkin; Snow Dog Marley; Thanks, Mom and Dad!; Marley: Messy Dog (I Can Read Level 2)