Suggestions by @monsterfan

Aardvark

as Milhouse Van Houten in The Simpsons as non-human animals(story removed)

Score: +1

Bonobo

as Comic Book Guy in The Simpsons as non-human animals(story removed)

Score: +1

Galápagos Tortoise

as Judge Roy Snyder in The Simpsons as non-human animals(story removed)

Score: +1

Giant Panda

as Mayor Joe Quimby in The Simpsons as non-human animals(story removed)

Score: +1

Owl

as Sideshow Bob in The Simpsons as non-human animals(story removed)

Score: +1

Mute Swan

as Jacque in The Simpsons as non-human animals(story removed)

Score: +1

Grey heron

as Dolph Strawbean in The Simpsons as non-human animals(story removed)

Score: +1

Wild Boar

as Kearney Zzyzwick in The Simpsons as non-human animals(story removed)

Score: +1

Blue-and-Yellow Macaw

as Jimbo Jones in The Simpsons as non-human animals(story removed)

Score: +1

Coyote

as Timothy Lovejoy in The Simpsons as non-human animals(story removed)

Score: +1

Dromedary Camel

as Otto Mann in The Simpsons as non-human animals(story removed)

Score: +1

Russ Cargill

as Bad Side in Sorting characters in Imaginationland sides(story removed)

Score: +1

Troy McClure

as Good Side in Sorting characters in Imaginationland sides(story removed)

Score: +1

African Lion

as Krusty the Clown in The Simpsons as non-human animals(story removed)

Score: +1

Sheep

as Martin Prince in The Simpsons as non-human animals(story removed)

Score: +1

Spotted Hyena

as Edna Krabappel in The Simpsons as non-human animals(story removed)

Score: +1

Meerkat

as Sherri and Terri in The Simpsons as non-human animals(story removed)

Score: +1

Mongoose

as Richard in The Simpsons as non-human animals(story removed)

Score: +1

asian shrew

as Les Moore in The Simpsons as non-human animals(story removed)

Score: +1

Grizzly Bear

as Barney Gumble in The Simpsons as non-human animals(story removed)

Score: +1