Animals That Start with O | List & Examples

Animals that start with “O” are not very common. This article contains a list of animal names that start or end with “O.”

Example: Animals that start with O in a sentence
At the wildlife reserve, we saw an ostrich strutting across the plains, an otter playfully swimming in the river, and an owl perched high in a tree.

Animals that start with O: List

English has many animals that start with “O,” but some of them are not very common:

  • Oarfish
  • Ocelot (spotted wild cat)
  • Octopus
  • Okapi (forest giraffe)
  • Olm (aquatic salamander)
  • Onager (also known als Persian zebra)
  • Opah (moonfish)
  • Opossum
  • Orangutan
  • Orca (killer whale)
  • Oryx (large antelope)
  • Otter
  • Otterhound (dog breed)
  • Osprey (bird)
  • Ostrich
  • Owl
  • Ox
  • Oyster

You can also download this list of animals that start with “O” as a PDF.

Animals that start with “O” PDF

Note
Some uncommon animal names with “O,” such as “oryx” and “onager,” are easily misspelled. Use QuillBot’s free Grammar Checker to check your spelling for free.

Animals that end with O: List

English only has a few animal names that end with “O,” including:

  • Armadillo
  • Bonobo
  • Buffalo
  • Dingo
  • Flamingo
  • Gecko
  • Hippo (hippopotamus)
  • Kākāpō
  • Kangaroo
  • Rhino (rhinoceros)

You can also download this list of animals that end with “O” as a PDF.

Animals that end with “O” PDF

Animals with other letters

If you’re looking for animals that start with another letter, you can visit one of our other articles on animal names.

Animals with A Animals with F Animals with K Animals with Q Animals with V
Animals with B Animals with G Animals with L Animals with R Animals with W
Animals with C Animals with H Animals with M Animals with S Animals with X
Animals with D Animals with I Animals with N Animals with T Animals with Y
Animals with E Animals with J Animals with P Animals with U Animals with Z

Frequently asked questions about animals that start with "O"

What are some zoo animals that start with “O”?

English has a few animals that start with O. Some zoo animals that start with “O” include:

  • Ocelot
  • Okapi
  • Orangutan
  • Orca
  • Oryx
  • Ostrich
  • Otter
  • Owl

Use QuillBot’s free Grammar Checker to avoid misspelling animal names.

What are some sea animals that start with “O”?

English has quite a few animals that start with O. Some sea animals that start with “O” include:

  • Ocean sunfish
  • Ocellaris clownfish (clown anemonefish)
  • Octopus
  • Olive ridley turtle
  • Oarfish
  • Opah (moonfish)
  • Orca
  • Oyster

Use QuillBot’s Grammar Checker to avoid spelling mistakes.

Is this article helpful?
Julia Merkus, MA

Julia has a bachelor in Dutch language and culture and two masters in Linguistics and Language and speech pathology. After a few years as an editor, researcher, and teacher, she now writes articles about her specialist topics: grammar, linguistics, methodology, and statistics.