- Our First Year Raising a Jack Russell Terrier Puppy (And Then Some)
- Our Friend the Dog
- Our Friends the Dandie Dinmont and Skye Terrier
- Our Furry Stress Busters
- Our Garden Birds
- Our Last Walk
- Our Life With Che: A Walk on the Wild Side
- Our Lives With Humans
- Our National Parks
- Our Oldest Companions
- Our Pets
- Our Solar System (Sun, Moons & Planets) : Second Grade Science Series
- Our Solar System (Sun, Moons & Planets) : Second Grade Science Series
- Our Solar System: Astronomy Books for Kids - Intergalactic Kids Book Edition
- Our Songbirds
- Our Sun : A Star and Energy Source Astronomy Beginners' Guide Grade 4 Children's Astronomy & Space...
- Our Sun, Planets and Moons Children's Science & Nature
- Our Symphony with Animals
- Our Woodland Birds
- Out and About with Your Dog
- Out of Harm's Way
- Out of the Saddle
- Out of the Wild
- Out on a Leash
- Outer Space: Astronomy Kid’s Guide To The Universe - Children Explore Outer Space Books
- Outwitting Dogs
- Overkill
- Owing a Silky Terrier
- Owly Owls Most Popular Owls Of The World
- Owning A Cat
- Owning A Cat - A Pet Cat Handbook For Complete Beginners
- Owning A Cat 101
- Owning a Cat for Newbies
- Owning a Paralyzed Dog - The Complete Care Guide