Animals and pets Amigo (voiced by Robert Brewster) is the Molinas' pet bulldog. Like Pal, Amigo has been shown to speak in some episodes. "Amigo" means "friend" (or "pal") in Spanish. Fur Elise is Dr. Frederique Fugue's pet cat from the episode "D.W.'s Furry Freakout" and is named after the song Für Elise by Beethoven. General Higgins is Ladonna's pet rat. He can do tricks, and is very smart for a rat. Killer (voiced by Melissa Pirrera) is a stray dog found on Grandma Thora's porch. She has been to the pound many times and is known for being vicious. It is unknown who her previous owner was, but her current owner is Grandma Thora. Pal and Amigo were once afraid of her because of her bite, but her reputation was saved when she rescued Nemo by barking at some firefighters on a rainy day. Killer is shown in the very early books as Grandma Thora's dog, but was not introduced on the TV series until Season 9. Mr. Toad is a toad and stereotypical business investor who invested in "The Sock Market" as well as "The Lint Rush". He is the husband of Toady Wartface. Nemo (voiced by Greg Kramer) is Francine's tuxedo cat, and Pal's archenemy. However, they were friends in Nemo's debut episode. Arthur also disliked him at first, mistaking his playful antics for hostility due to his general dislike of cats. His facial features changed drastically after his debut. Before he was called "Nemo", he was called "Rose Petal" by Catherine, Francine's older sister. For some reason, even though Pal and Nemo were friends in "Francine and the Feline", they are enemies in every later episode except "Pet Projects". Pal Read (voiced by Michael Yarmush seasons 1–2; Arthur Holden seasons 3–5; Simon Peacock from Season 6 onwards; Yvette Kaplan in "Arthur's Missing Pal"; with vocal effects by Frank Welker) is Arthur's pet puppy. His father was an English Setter. D.W. often refers to him as "Arthur's crazy dog". In earlier episodes, he was easily excited and often destroyed the house, but Arthur was able to train him. He is revealed to be able to speak in some episodes, but no one can understand him except Kate and most other animals. When he does speak, he speaks properly with an English accent in an adult voice, despite being a puppy. Pepe (voiced by Rick Jones) is an