Animals That Start With O
Discover 3 animals whose common name begins with the letter O, from Bornean Orangutan to Okapi. This includes 2 mammals and 1 marine animal. Browse photos, taxonomy, habitat, diet, and conservation status for each species. 2 of these species are classified as vulnerable, endangered, or critically endangered.
About Animals That Start With O
Diet among these species breaks down as 1 omnivore, 1 carnivore, and 1 herbivore. They live across rainforest and ocean habitats, and are native to Asia, Europe, North America, and Africa. Body weight varies across the group, ranging from 3kg to 350kg.
O Animals
Bornean Orangutan
Pongo pygmaeus
MammalThe Bornean orangutan is a critically-endangered great ape found only on the island of Borneo, spending nearly its entire life moving through the rainforest canopy.
Common Octopus
Octopus vulgaris
Marine AnimalThe common octopus is a remarkably intelligent, boneless marine invertebrate found in coastal waters worldwide, renowned for its problem-solving abilities and rapid camouflage.
Okapi
Okapia johnstoni
MammalThe okapi is a shy, elusive relative of the giraffe found only in the dense rainforests of the Democratic Republic of the Congo. Despite its zebra-striped legs, it is not related to zebras at all -- the stripes are thought to help camouflage it in dappled forest light and help calves follow their mother through dense vegetation.
Alphabetical List
Interesting O Animal Facts
- Bornean Orangutan: Orangutans build a new nest of branches and leaves to sleep in every single night.
- Common Octopus: An octopus has three hearts and blue, copper-based blood.
- Okapi: The okapi's tongue is so long it can use it to clean its own eyes and ears.
O Animals FAQs
How many animals start with the letter O?
This page currently features 3 animals whose common name starts with O, and more are added regularly.
What is the most popular animal starting with O?
Common Octopus is the most popular animal starting with O on this site.
What is the rarest animal starting with O?
Bornean Orangutan has the most severe conservation status (Critically Endangered) among animals starting with O.
Are any animals starting with O endangered?
Yes — 2 animals starting with O are classified as vulnerable, endangered, or critically endangered.