Over the years, Oscar the Grouch has had many pets. His diverse menagerie includes various dogs, cats, pigs, several elephants, and a donkey. His favorite pet is his worm, Slimey. In addition to his pets, Oscar built Charles the Robot to follow his every command.
Arthur
alley cat
alley cat
Betsy
dog
dog
Blobby
blob
blob
Boxy
rectangle
rectangle
Camille
lobster
lobster
Cranky
rottendoodle
rottendoodle
Daisy
skunk
skunk
Esme
cow
cow
Fernando
flea
flea
Fido
cat
cat
Fluffy
elephant
elephant
Fred
fish
fish
Grishmippen
goat
goat
Gus
goat
goat
Iago
donkey
donkey
Jacques
sock
sock
Jennifer
skunk
skunk
Jezabel
chicken
chicken
Lassie
goat
goat
Lou
shoe
shoe
Marie
flea
flea
Mud Pie
hamster
hamster
Petunia
pig
pig
Preposterous
puppy
puppy
Slimey
worm
worm
Slinky
snake
snake
Spot
pig
pig
Stinky
skunk
skunk
Stinky
seagull
seagull
Tiny Tim
cat
cat
Twitchy
spider
spider
Other pets[]
- Episode 0329 — Bossy, a cow
- Episode 0507 — Spot (wolf), Rover (lion), and seals
- Episode 0523 — Grover offers to become Oscar's pet, however it doesn't work out.
- Episodes 0524, 0590, and 0619 — Frank, a fly
- Episode 0671 — Hortense, a dragon
- Episode 0700 — Rosebud, a skunk
- Episodes 1001, 1055 — Freddie, a fly
- Episode 1170 — pet termites
- Episode 1266 — Moby Richard, a whale
- Episode 1269 — Chloris, a cow
- Episode 1149 — Charles, a dragon
- Episode 1441 — Oscar feeds multiple cows, horses, chickens, and one pig in his can.
- Episode 1448 — Seymour, a hippo
- Episode 1449 — a flock of moths
- Episode 1489 — Anthony, a tiger
- Episode 1535 — Miranda, Amad, Simba, Rosie, Gram, Petunia, Polly, Kate, Donald
- Episode 1536 — kangaroo
- Episode 1552 — Myrna, a cow
- Episode 1553 — buffalo, deer, antelope
- Episode 1586 — Dick and Jane, goats
- Episode 1618 — Hedda, a hippo
- Episode 1648 — Rebecca (cow), Carlton (sheep), Sigourney (donkey), Clyde (rooster)
- Episode 1661 — giraffe
- Episode 1680 — octopus
- Episode 1740 — hippos, who reside in his swimming pool, including Harry and Daphne
- Episode 1747 — alligator, ape, antelope, anteater, and aardvark
- Episode 1831 — Cameron (cow), Rover (whale), Mrs. Calabash (indeterminable)
- Episode 1853 — Garfield, a rhino
- Episode 1856 — monkeys
- Episode 1959 — donkey
- Episode 2076 — Jaws, a goldfish
- Episode 2269 — Moby Jane, a whale
- Episode 2548 — Billy, goat
- Episode 3664 — Portia, a rhino
- Episode 3714 — Ripper, a dolphin
- Elmo's World: Farms — an entire farm in his can
- Episode 4088 — buffalo
- Episode 4710 — chickens, including Henrietta