It depends on how closely we want to keep to Tolkien. If we want to keep the strictest closeness, then Canines would be the best bet with Elves as Wolves, Humans as Dogs, Hobbits as Small Dogs, and Dwarves as Painted Dogs (which can't interbreed with Wolves/Dogs but look similar enough). Orcs/Goblins would be vaguely Canine in shape but without a specific species (and without using the poor Hyenas).No, no -- hear me out.
Imagine Middle Earth along the lines of Redwall. Disney has acquired the LotR License gasp horror -- FOCUS HERE PEOPLE! -- and you need to cast the various characters and races with appropriate anthropomorphic animals. What do you choose and why?
Here's one: Elves are squirrels. It explains all the tree-hugging.
What needs to change, except the species?For a Furry Lord of the Rings, what would the Lore be like? In Tolkien it's a mythic history of our Earth, but here it's simply not going to be. I've been playing around with ideas for had the setting not been Earth but it's not going to resemble Middle Earth except in the broadest way.
Something thematically in between dogs and deer. Maybe a goat?What needs to change, except the species?
...Although, talking of species, if, say, Elves are deer and Men are dogs, what does that make Elrond Half-Elven?
Great, now I've got an image of Hugo Weaving bleating "Ga-a-a-a-andalf!"Something thematically in between dogs and deer. Maybe a goat?
Well, besides that, the Elves are Fading for many reasons in terms of original lore, but mostly it is a way to get from the magical past to the mundane present where we just don't encounter that sort of thing anymore. If it's not our Earth then there's no particular reason the Elves, Dwarves, Hobbits, and so on need to vanish. They can stick around and the world can stay fairly magical.What needs to change, except the species?
...Although, talking of species, if, say, Elves are deer and Men are dogs, what does that make Elrond Half-Elven?