Read below for information on 10 different animals that start with the letter O, from ocelot to oyster. The most popular animal that starts with the letter O is the ocelot, a small cat also known as the painted leopard. The least popular O animal is the orangutan. Some can grow to be up to 200lbs, making them one of the largest primates in the world. Some fun facts about letter O name animals are:
- Opossums are believed to be immune to some snake venom
- With males growing over 9 feet tall, ostriches are the world’s largest bird
- Otters hold hands while sleeping to avoid drifting apart while in flowing water
Popular Animals starting with O

Ocelot
Also known as the Painted Leopard!

Old English Sheepdog
Intelligent, sociable and playful!
Our Newest O Animals
The most recently added Animals that start with the letter O.

Opossum
Thought to be immune to certain snake venom!

Octopus
There are around 300 different species!

Otter
There are 13 different species worldwide
Most Recently Updated O Animals
The most recently updated Animals that start with the letter O.

Ostrich
The largest bird in the world!

Okapi
Eats more than 100 different types of plant!

Orang-utan
Shares 97% of its DNA with humans!
All Animals that Start with O

Ocelot
Also known as the Painted Leopard!

Octopus
There are around 300 different species!

Okapi
Eats more than 100 different types of plant!

Old English Sheepdog
Intelligent, sociable and playful!

Olm
Inhabits dark underwater caves

Opossum
Thought to be immune to certain snake venom!

Orang-utan
Shares 97% of its DNA with humans!

Ostrich
The largest bird in the world!

Otter
There are 13 different species worldwide

Oyster
Can process up to 10 litres of water an hour!
Alphabetical List of Animals That Start with O

Animal by Letter Lists
- Animals that Start with A
- Animals that Start with B
- Animals that Start with C
- Animals that Start with D
- Animals that Start with E
- Animals that Start with F
- Animals that Start with G
- Animals that Start with H
- Animals that Start with I
- Animals that Start with J
- Animals that Start with K
- Animals that Start with L
- Animals that Start with M
- Animals that Start with N
- Animals that Start with O
- Animals that Start with P
- Animals that Start with Q
- Animals that Start with R
- Animals that Start with S
- Animals that Start with T
- Animals that Start with U
- Animals that Start with V
- Animals that Start with W
- Animals that Start with X
- Animals that Start with Y
- Animals that Start with Z