Wolfsbane (Marvel) is well known for a wolf-like abilities and traits.
Shape-shifters (The Twilight Saga)
Starrk's (Bleach) Resurreccion form makes him have grey fur covering most of his body, as well as having twin pistols.
Sparky the fairy dog (The Fairly OddParents)
Rex the Wonder Dog (DC Comics)
Shadow the Dog (WarioWare)
Jabra (One Piece) ate the Inu Inu no Mi, Model: Wolf and can turn into a wolf hybrid or full wolf at will.
Duke Inurashi (One Piece) is a canine mink who rules of the Mokomo Dukedom during the day.
Wanda (One Piece) is also a canine mink who serves as Inuarashi’s trusted aide.
Kiba Inuzuka (Naruto) like his clan are dog Affined.
A Dire Wolf Terminator model (Terminator: Revolution)
Zorua and Zoroark the Illusion Fox Pokémon.
Sajin Komamura (Bleach) an anthropomorphic wolf.
Carmelita Fox (Sly Cooper), an anthropomorphic fox.
Cu Sith (Valkyrie Crusade)
Lycaon (Valkyrie Crusade) is a wolf person.
Sesshomaru (Inuyasha) is a full blooded dog demon whose true form is that of a giant white dog.
Derek Hale (Teen Wolf) After dying and coming back to life, Derek regained his werewolf power and now has the ability to transform into a full wolf
Miles "Tails" Prower (Sonic the Hedgehog), an anthropomorphic fox.
Antoine D'Coolette (Archie's Sonic the Hedgehog), an mobian coyote.
Lupe the Wolf and other mobian wolves (Archie's Sonic the Hedgehog)
Fiona Fox (Archie's Sonic the Hedgehog), a mobian fox.
Sonar the Fennec (Archie's Sonic the Hedgehog), a mobian fennec fox.
Ben Muttski (Archie's Sonic the Hedgehog), a mobian dog.
Zooey (Sonic Boom), an anthropomorphic fox.
Doc Ginger (Sonic Boom), an anthropomorphic dog.
Sousuke Inukawa (Hakkenden: Eight Dogs of the East) can transform into a dog.
Gigi, A.K.A. Experiment 007 (Lilo & Stitch)
Warg (Castlevania: Lords of Shadow)
The PAW Patrol (PAW Patrol)
The Dalmatians (101 Dalmatians)
Peter Puppy (Earthworm Jim)
Repede (Tales of Vesperia)
Krypto The Super Dog (DC Comics)
Ace The Bat Hound (DC Comics)
Fox McCloud (Star Fox), an anthropomorphic fox.
Krystal (Star Fox), an anthropomorphic fox.
The Pound Puppies (Pound Puppies)
Scooby Doo (Scooby Doo Franchise) is a textbook user of this ability.
Amber (Scooby Doo), is an alien disguised as an earth golden retriver.
Dynomutt (Dynomutt, Dog Wonder), a robotic dog.
Air Bud (Air Bud & air buddies series)
Megasis (Super Buddies) in the form of captain canine
Gromit (Wallace & Gromit series)
Jake (Adveture Time) is a magical, talking, shapeshifting puppy
Lady, Tramp and a variety of other dogs (Lady and the Tramp)
Charlie B. Barkin (All Dogs Go to Heavan)
Due to a curse placed upon him by a mysterious man, schoolbully Eddie Dowd (100 Deeds for Eddie McDowd) is stuck in the form of a dog until he can perform 100 good deeds to others.
Spike (My Little Pony: Equestria Girls), in the human world is Spike a dog.
Diamond Dogs (My Little Pony: Friendship Is Magic)
Timberwolves (My Little Pony: Friendship Is Magic)
Nick Wilde (Zootopia), an anthropomorphic fox.
Finnick (Zootopia), an anthropomorphic fennec fox.
and Larry (Zootopia), two anthropomorphic wolves.
Renart the Fox (Renart the Fox), an anthropomorphic fox.
Riley (Call of Duty:Ghosts)
A Mabari War Hound (Dragon Age series)
Bliss Llewellyn (Blue Bloods and Wolf Pact) is now a wolf.
Robin Hood (Disney's Robin Hood), an anthropomorphic fox.
Otto (Disney's Robin Hood), an anthropomorphic dog.
Sheriff of Nottingham (Disney's Robin Hood), an anthropomorphic wolf.
Wolf Arrowmen (Disney's Robin Hood), a group of anthropomorphic wolves.
Boss Wolf (Kung Fu Panda), an anthropomorphic wolf.
Ysengrin (Renart the Fox), an anthropomorphic wolf.
Sirius Black (Harry Potter)
Fox (Skunk Fu!), an anthropomorphic fox.
Don Karnage (TaleSpin), an anthropomorphic red wolf.
Foxy Loxy (Disney's Chicken Little), an anthropomorphic fox.
Oliver Twist (Saban's Adventures of Oliver Twist), an anthropomorphic dog.
Umeko (Teenage Mutant Ninja Turtles), an anthropomorphic fox.
Alopex (Teenage Mutant Ninja Turtles), an anthropomorphic fox.
Kitsune (Teenage Mutant Ninja Turtles), an anthropomorphic fox.
Thane (Armello), an anthropomorphic wolf.
River (Armello), an anthropomorphic wolf.
Scarlet (Armello), an anthropomorphic fox.
Edward (Marchen Awakens Romance) is a talking dog and the loyal servant of the Lestarva royal family.
Guardian ÄRM, Bururu (Marchen Awakens Romance) has the form of a giant bulldog. Ironically its master Chaton, is a cat girl.
Dr. Delbert Doppler (Treasure Planet), a humanoid dog-like alien.
Humphrey and Kate (Alpha & Omega)
Brandy Harrington (Brandy & Mr. Whiskers)
Dog Announcer (Disney's Chicken Little), an anthropomorphic labrador retriever dog.
Dreadmon (Teenage Mutant Ninja Turtles/The Mighty Mutanimals)
After being exposed to mutagen, Chris Bradford (Teenage Mutant Ninja Turtles; 2012 TV series) became Dogpound, a mutant canine
..and after a second exposure to mutagen, became the wolflike Rahzar.
Fox (Franklin), an anthropomorphic fox.
Roy (Dreamkix), an anthropomorphic dachshund.
Rebecca (Dreamkix), an anthropomorphic dog.
Garcia (Dreamkix), an anthropomorphic chihuahua.
Zuzo (Elena of Avalor), a spirit fox.
Bianca (Sheep and Wolves)
Roger Parslow's daemon, Salcilia (His Dark Materials) had an unsettled form, but she usually took the appearance of a dog, signifying her counterpart's loyal nature.
Fox fins (My Little Pony Friendship Is Magic/IDW)