If anime counts, Matatabi and Kurama from naruto/naruto shippuden. :3 Also matatabi isn't that popular I think because there isn't really much art of her :O..

Vixie from Fox and the Hound! She was my first crush and I never realized it was a love for feral art until recently XD

Definitely it was Steele and Pongo and still is to this day

I think for me is scooby-doo cause I see it a long time the cartoon, maybe cliford too
In comics/bd I will say a french comic named boule and bill, idefix from asterix or rantanplan from lucky luke
rex in series a police german dog < 3
and for the disney I say brother bears a lot, bolt, and doug from up

I quite like the idea of Bolt and Jenna.... Seems like a good pairing ^^

My first feral crush was definitively Perdita and immediately after her came Jenna. About the boys i put in game Copper, Pongo and Bolt. These are the most famous and the most adorable in my eyes. Then i can list a few that are less known and underrated. Amber from the movie "Scooby Doo and the alien invaders" in her feral dog form. Iris the white bitch from the TV show "Mighty Mike". Nana from Peter Pan. Blue, Hige, Kiba, Tsume, Toboe, from the anime Wolf's Rain. Kurama and Akamaru from Naruto. Akela from Disney Jungle Book. I have others in mind but think these are already enough for you to choose. ^-^"

If video games are included, definitely Amaterasu from Okami. Then in terms of movies/TV in any order: Balto, Jenna, Spirit and Bolt.

rikki tikki tavi. I've always been in love with the tube.

Yeah you named all the famous ones already...

Then there's also Amaterasu from Okami, but she's fairly famous too.

I really like the Anime Wolf's Rain. Kiba, Tsume, Hige, Toboe, Blue. They are what got me into this fandom.

One dog that I've NEVER seen drawn here is Rantanplan, by Lucky Luke

Dixie (Fox and the Hound 2) and Delilah~ (101 dalmatian Street)

amaterasu my beloved

Gotten quite attached to Bolt over the last few years ^^;

Hige and Blue have always been my fav ferals

Repede from Tales of Vesperia and Red XIII from FFVII are two of my favorites that are less popular out there.

Amaterasu from okami

But I also loved balto and the lion king very much as I kid
Also the 9tailed fox from Naruto I love in cute stuff
I did like bolt
Scooby-Doo particularly the girl from the alien area 51 one I liked, although Ive never been in to Scooby-Doo himself
Wolf link
Kiba the white wolf from wolfs raining

Man I feel like I'm forgetting about some, but personally I used to watch a lot of feral cartoon movies as a kid
And have tried to play every feral canine video game too

Amaterasu from Okami.

Praise the sun!

I like Camio and O-ha in Garry Kilworth's The Foxes of Firstdark (also titled Hunter's Moon) ... they live ordinary fox lives with adventures in the forest and the city and so forth, plus interactions with other foxes. The book follows their lives as well as the fox religion system and the story of their family.