- U.S. Army Zombie Training Manual
- U.S. Military Working Dog Training Handbook
- Uccelli marini e costieri della Provincia della Spezia
- Ultimate Cat: A Complete Guide to Breeds and Hybrids
- Ultimate Level of Horsemanship
- 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
- Umzug mit der Katze
- Un altro cane
- Un cane da favola
- Un cane in famiglia
- Un cane in famiglia - La guida a una serena e felice convivenza con il nostro amico a quattro zampe
- Un cheval pour la vigne
- Un cuore felice
- Un día de gatos
- Un Filtro per l'acquario
- Un gato callejero llamado Bob
- Un león en el sofá
- Un lien si fort
- Un Matrimonio Con La Coda
- Un miao ci può guarire
- Un monde de chiens
- Un olfato para todo
- Un ultimo fiocco di neve
- Una exótica adopción
- Una giornata con Galileo
- Una giornata da gatti
- Una Perrita Con Propósito
- Unbezähmbar
- Uncle John's Bathroom Reader Dog Lover's Companion
- Uncle John's Bathroom Reader Horse Lover's Companion
- Unconditional Honor
- Unconditional Love
- Unconditional Love
- Unconditional Love: PetRescue's Great Animal Stories
- Und dann kam Billy
- Under Dogs
- Under the Paw
- Underdogs
- Understand and Train your Chesapeake Bay Retriever Dog with Good Behavior
- Understand The Weather: Teach Yourself
- Understanding and Training Your Vizsla Puppy and Dog With Good Behavior
- Understanding Canine Aggression: Causes and Solutions
- Understanding Cat Language - 50 Points
- Understanding Dog Language - 50 Points
- 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
- Understanding Your New Kitten
- Underwater Dogs
- Underwater Dogs (Kids Edition)
- Underwater Puppies
- Underwater to Get out of the Rain
- Undogumented
- Undone
- Undulatens A-B-C
- Undulater
- Unearthed
- Unexpected Miracles
- Unforgettable Moments
- Ungezogene Hunde
- Ungiftige Pflanzen für jeden Katzenhaushalt
- Universe
- Universo
- Unleashing Your Dog
- Unlock Animals - Puppies!
- Unlocking the Canine Ancestral Diet
- Unnatural Companions
- Unnatural Selection
- Unrelenting
- Unsauberkeit bei Katzen
- Unscheinbarkeiten
- Unser Hund der Tibet Terrier
- Unser Hund, mein Freund
- Unser Jüngster hat vier Pfoten
- Unser Katzenalltag ist besonders
- Unser Kätzchen
- Unser Traumhund: Berner Sennenhund
- Unser Traumhund: Cavalier King Charles Spaniel
- Unser Traumhund: Collie
- Unser Traumhund: Dalmatiner
- Unser Traumhund: Deutscher Schäferhund
- Unser Traumhund: Dobermann
- Unser Traumhund: English Cocker Spaniel
- Unser Traumhund: Flat Coated Retriever
- Unser Traumhund: Hovawart
- Unser Traumhund: Pudel
- Unser Traumhund: Rottweiler
- Unser Traumhund: Schnauzer
- Unser Traumhund: West Highland White Terrier
- Unser Welpe
- Unsere grauen Leute
- Unseren Tieren zuhören ...
- Unter Katzen
- Until One Has Loved an Animal
- Untold!!! Worlds Top Racing Pigeon Fanciers Reveal Their Winning Secrets
- Upside-Down Dogs
- Urania
- Urlaub mit Hund
- Urlaub mit meinem Hund
- Uromastyx
- Uw hond gehoorzaam in 10 lessen