- Ultimate Cat: A Complete Guide to Breeds and Hybrids
- Ultimate List of Pitbull Breeders
- Ultimate Predators In The Wild
- Ultimate Puppy Training Guide: Necessary Knowledge You Need To Start You Off On The Right Paw
- Ulv!
- Um dia de gatos
- Uma Gata De Apartamento Chamada Monique
- Un altro cane
- Un cheval pour la vigne
- Un día de gatos
- Un olfato para todo
- Un ultimo fiocco di neve
- Una exótica adopción
- Una giornata con Galileo
- Una giornata da gatti
- Una Perrita Con Propósito
- Uncle John's Bathroom Reader Dog Lover's Companion
- Uncle John's Bathroom Reader Horse Lover's Companion
- Unconditional Love
- Unconditional Love: PetRescue's Great Animal Stories
- Under An Italian Sky
- Under the Paw
- Underdogs
- Understand and Train your Chesapeake Bay Retriever Dog with Good Behavior
- Understand The Weather: Teach Yourself
- Understanding Canine Aggression: Causes and Solutions
- Understanding Elephants
- Understanding Heartworm Disease & Prevention
- Understanding Life Below the Beautiful Sea Children's Fish & Marine Life
- Understanding Reactive Dogs: Why Dogs React & How to Help
- Understanding Reptile Parasites
- UNDERSTANDING YOUR DOG
- Understanding Your Dog For Dummies
- Underwater Dogs
- Underwater Dogs (Kids Edition)
- Underwater Puppies
- Underwater to Get out of the Rain
- Unearthed
- Unexpected Miracles
- Universe
- Unleashing Your Dog
- Unlocking the Canine Ancestral Diet
- Unnatural Companions
- Unnatural Selection
- Unrelenting
- Unscheinbarkeiten
- Unser Hund der Tibet Terrier
- Unser Hund, mein Freund
- Unser Jüngster hat vier Pfoten
- Unter Katzen
- Until One Has Loved an Animal
- Untold!!! Worlds Top Racing Pigeon Fanciers Reveal Their Winning Secrets
- Urania
- Urlaub mit Hund
- Urlaub mit meinem Hund
- Urlaub mit oder ohne Hund ?
- Uzbe Is Missing