The Girl Who Remembered Horses is filled with dogs, and they play important roles - from pulling loads, to helping hunters track game, to companionship.
Six Degrees of Lost (which releases June 1, 2012) contains lots of dogs, too, and one of them plays a big part in how the two main characters, Olive and David, meet. But I talked in this post called The Making of a Cover about why we didn't choose a dog as part of the artwork.
The Horse Jar is about one girl's quest for a horse of her own, but one of the main characters is a wire-haired dachshund named Spunky. Dog on the cover? No.
Even my very first novel, Finding Chance (in which the main character finds a starving dog) has no dog on the cover.
Which leaves me to my present musings: Should we make it five in a row? Or should a book called Walking the Dog definitely have a dog on the cover?
What makes you pick up a book? Thoughts?