Ghost cats
Susan Shreve
Eleven-year-old Peter and his three younger siblings rediscover their lost closeness when the ghosts of their dead pet cats begin to return mysteriously.

by Patrick V. O'Sullivan (1990)
While visiting their grandfather on the Irish island of Ennismore, a young sister and brother are caught up in an ancient battle between good and evil, centering on a magical horse.
Susan Shreve
Eleven-year-old Peter and his three younger siblings rediscover their lost closeness when the ghosts of their dead pet cats begin to return mysteriously.
Helen V. Griffith
Starting a new life on a farm in the country, Nickel has to adjust to the attentions of a local bully and the appearances of a ghost horse that was supposed to have died in a fire.
Peg Kehret
When Jonathan and his family go camping on Magpie Island, they look forward to a fun, relaxing weekend. But their fun quickly vanishes when Jonathan, his sister, Abby, and their dog, Moose, find themselves in the middle of a natural disaster. A devastating earthquake has hit, destroying their camper, knocking out the only bridge to the mainland, and leaving Jonathan, Abby, and their dog with no food, water, or shelter. Alone in the woods, can Jonathan manage to keep calm and save Abby and Moose—and stay alive himself?
N.D. Wilson
"Hunted and on the run, Cyrus and Antigone Smith race to find the inheritance left to them by their benefactor, Billy Bones, before rampaging transmortals can descend on Ashtown and free their buried brothers"--